Write a program to declare an integer array of 50 elements. A. Write a function getArray() to get array input from the user that will be used to initialize the first thirty five (35) elements of the array by getting input from the user. The rest of the 15 entries would be set to zero (0). B. Write a function FindEven() to find the total numbers of even numbers in the given array. C. Write a function ModifyArray() to make the each array element to a multiple of four(04). D. Write a function named ‘FindMin()’ that will find the smallest element in the given array and return the smallest element.

Write a program to declare an integer array of 50 elements.  
A. Write a function getArray() to get array input from the user  that will be used to initialize the first thirty  five (35) elements of the array by getting input from the user. The rest of the 15 entries would be set to zero (0).  
B. Write a function FindEven() to find the total numbers of even numbers in the given array.
C. Write a function ModifyArray() to make the each array element to a multiple of four(04).
D. Write a function named ‘FindMin()’ that will find the smallest element in the given array and return the smallest element.

#include<stdio.h>
void header()
{
    printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
    printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");
}
void getArray(int a[])
{
    int i;
    for(i=0;i<35;i++)
    {
        printf("Enter %d Number : ",i+1);
        scanf("%d",&a[i]);
        printf("\n");
    }
    printf("\nYou Array's Elements are");
    for(i=0;i<50;i++)
    printf(" %d ",a[i]);
}
void even(int a[])
{
    int i;
    for (i=0;i<35;i++)
    {
        if (a[i]%2==0)
        printf("%d is Even\n",a[i]);
    }
}
int multiply(int a[])
{
    int i;
    for(i=0;i<35;i++)
    {
        printf("%d X 4 is %d\n",a[i],a[i]*4);
    }
}
int FindMin(int a[])
{
    int i,j,hold;
    for(j=0;j<35;j++)
    {
         for(i=0;i<35-1;i++)
         {
              if (a[i]>a[i+1])
              {
                  hold=a[i];
                  a[i]=a[i+1];
                  a[i+1]=a[i];
              }
         }
    }
        printf(" Minimum Number You have Entered is  %d ",a[0]);
        printf("\n\n\n\n\n");
}
int main()
{
    int a[50]={0},i;
    header();
    system("pause");
    system("cls");
    getArray(a);
    system("pause");
    system("cls");
    even(a);
    system("pause");
    system("cls");
    multiply(a);
    system("pause");
    system("cls");
    FindMin(a);
}

Write a program to declare an integer array of 50 elements which gets 35 numbers from user and print rest of 15 as ZEROS.

//Exercise 1:Write a program to declare an integer array of 50 elements.
//A. Write a function getArray() to get array input from the user  that will be used to initialize the first thirty  five (35) elements of the array by getting input from the user. The rest of the 15 entries would be set to zero (0).
#include<stdio.h>
void header()
{
    printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
    printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");
}
int main()
{
    int a[50]={0},i;
    header();
    system("pause");
    system("cls");
    for(i=0;i<35;i++)
{
     printf("%d Number : ",i+1);
     scanf("%d",&a[i]);
     printf("\n");
}
    for(i=0;i<50;i++)
    printf(" %d ",a[i]);
    getch();
}

Exercise 1: Write a C Program to create the data for some students (roll, name, mark1, mark2, mark3, term mark) and then find the total marks for each student and average mark of each student.

//Exercise 1: Write a C Program to create the data for some students
//(roll, name, mark1, mark2, mark3, term mark) and then find the total
//marks for each student and average mark of each student.
#include<stdio.h>
void header()
{
    printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
    printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");
}
struct student
{
    int rollno;
    char name[500];
    float mark1;
    float mark2;
    float mark3;
    float term_mark;
    float total;
    float average;
}st;
int main()
{
    header();
    system("pause");
    system("cls");
    printf("Enter Roll No.   : ");
    scanf("%d",&st.rollno);
    fflush(stdin);
    printf("\nEnter Name       : ");
    gets(st.name);
    printf("\nEnter Marks 1    : ");
    scanf("%f",&st.mark1);
    printf("\nEnter Marks 2    : ");
    scanf("%f",&st.mark2);
    printf("\nEnter Marks 3    : ");
    scanf("%f",&st.mark3);
    printf("\nEnter Term Marks : ");
    scanf("%f",&st.term_mark);
    system("cls");
    fflush(stdin);
    printf("Name         : %s ",st.name);
    printf("\nMarks 1      : %.2f",st.mark1);
    printf("\nMarks 2      : %.2f",st.mark2);
    printf("\nMarks 3      : %.2f",st.mark3);
    printf("\nTerm Marks   : %.2f",st.term_mark);
    st.total=0;
    st.total=st.mark1+st.mark2+st.mark3+st.term_mark;
    st.average=0;
    st.average=st.total/4;
    printf("\nAverage      : %.2f",st.average);
    printf("\nTotal        : %.2f ",st.total);
    printf("\n\n\n");
    return 0;
}

//Exercise 3: Write a C Program to count the number of characters, words, lines, spaces and tabs in the input supplied from a file.

//Exercise 3: Write a C Program to count the number of characters, words, lines, spaces and tabs in the input supplied from a file.
#include<stdio.h>
void header()
{
    printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
    printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");

}
int main()
{
    FILE *f,*e;
    char a[500],ch;
    int chr=0,sp=0,words=0,lines=0,tabs=0;
    header();
    system("pause");
    system("cls");
     f=fopen("abc.txt" , "w");
    if(f==NULL)
    {
        printf("\nUnable to Open File...!!");
        return 1;
    }
    printf("\nWrite on File or CTRL+Z to exit : ");
    gets(a);
    while(!feof(stdin))
    {
        fprintf(f,"%s\n",a);
        gets(a);
    }

    fclose(f);
    e=fopen("abc.txt" , "r");
    if(e==NULL)
    {
        printf("\nUnable to Open File...!!");
        return 1;
    }
    rewind(e);
    while((ch=fgetc(e))!=EOF)
    {
         if (ch>='A' || ch>='a' && ch<='z' || ch<='Z')
         {
             chr++;
         }
         if(ch==' ')
         {
             sp++;
             words++;
         }
         if(ch=='\t')
         {
             tabs++;
             words++;
         }
         if(ch=='\n')
         {
             lines++;
             words++;
         }
    }
    printf("\nCharacters : %d\nSpaces : %d \nWords : %d\nLines : %d\nTabs : %d ",chr,sp,words,lines,tabs);
}

//Name Arslan ud Din Shafiq
//Reg.No. DDP-SP14-BSE-005
//Section A
//Assignment # 3
//Submitted to Sir A.K.Shahid
//COMSATS Institute of Information Technology, Lahore, Pakistan
#include<stdio.h>  //hearder file for I/O

char a[3][3]={0},i,j;           //a 2D array of 3X3 is globally declared and initialized to zero so that it doesn't give any junk value, variable i and j are also globally declared. They are declared globally so that they can be used throughout the program.
void header();                  //prototype of header funtion
void name(char *pt1,char *pt2); //prototype of name function
void filled();                  //prototype of filled funtion
int condition1();               //prototype of condition1 funtion
int condition2();               //prototype of condition2 funtion
int win1();                     //prototype of win1 funtion
int win2();                     //prototype of win2 funtion
void toe();                     //prototype of toe funtion
void print1();                  //prototype of print1 funtion
void design();                  //prototype of design funtion
void gameloading();             //prototype of gameloading funtion
struct std                  //data structure is declared as std
{
     int ch;               //object of data structure
     char s1[100],s2[100]; //character type object declaration in data structure
}st;
int main()                 //main funtion
{
    int menu;              //declaring menu variable

     header();            //calling header funtion
    system("pause");     //to pause screen                                    
    again:               //pointing for goto statement
 gameloading();               //loading funtion is called
    printf("\n\n\n\n\n\n\n\n\n\t\t\t1. Start Game\n\n\t\t\t2. Exit \n\t\t\t");
    menu=getche()-48;      //getting integer value from user
    system("cls"); //clearing screen

     switch(menu) //switch selection statement is applied on menu
{
    case 1: //first case for selection statement
        if(menu==1) //if user press 1 then game is started
        design(); //design() funtion is called
        break; //break statement for case 1
    case 2:
        if(menu==2) //if user select 2 then game is exited
            return 0; //terminating condition
        break;
    default:   //if user select any option except 1 and 2 then default condition is performed
        printf("\n\n\nYou have Selected Wrong Option.");
        printf("\n\n\n\n\n\n");
        system("pause"); //pausing screen
        system("cls"); //clearing screen
        goto again; //if default condition is performed this statement goes to again pointing value.
        break;
}

}
void header()       //a function which does not return any value used to show header file in main function
{
       printf("\n\t\t\t    TIC TAC TOE");                  //printf statement is used for printing & \n for next line and \t for tab or space
       printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
       printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");

}
void name(char *pt1,char *pt2)    //pointer funtion which gets the name of user and pass the address where it called
{
      puts("\n\n\t\t\tEnter Name of Player 1 : ");         //asking player 1 to enter name ...puts is used to print string
      printf("\n\t\t\t");
      gets(pt1);                                           //gets is used to get the string from user
      puts("\n\n\t\t\tEnter Name of Player 2 : ");         //asking player 2 to enter name
      printf("\n\t\t\t");
      gets(pt2);                                          //getting name of 2nd player
}
void filled()                                             //a function which tell us about the already filled box
{
      condition1();                                       //it checks the conditions given in funtion condition1() and decrement of i-- is used to identify is the box already filled
      i--;
      printf("\n\n\n\nOooOpppss This Block is already filled....!!!\n\n\n\n\n");          //this line is printed if the box is already filled
      system("pause");                                                                    // system pasuse is the system function which is used for a pause and to continue it requires pressing of any key
      system("cls");                                                                      //this is also a system function which  is used for clearing screen
}
int condition1()                                                                          //a funtion which return integer value if any of the given condition is true...THIS CONDITION IS FOR PLAYER 1
{
   
      if ( a[0][0]=='X' && a[0][1]=='X' && a[0][2]=='X'  ||   a[1][0]=='X' && a[1][1]=='X' && a[1][2]=='X'   ||   a[2][0]=='X' && a[2][1]=='X' && a[2][2]=='X' )           //this condition checks all the horizontal rows values one by one and returns 1 if condition is true for any horizontal row
           return 1;
      else if ( a[0][0]=='X' && a[1][0]=='X' && a[2][0]=='X' ||   a[0][1]=='X' && a[1][1]=='X' && a[2][1]=='X'   ||   a[0][2]=='X' && a[1][2]=='X' && a[2][2]=='X' )       //this condition checks all the vertical column values one by one and returns 1 if condition is true for any column row
           return 1;
      else if ( a[0][0]=='X' && a[1][1]=='X' && a[2][2]=='X')                //this condition checks the principle diagonal values and returns 1 if condition is true. AND operator is used because all conditions in that statement should be true in order to return 1
           return 1;
      else if ( a[0][2]=='X' && a[1][1]=='X' && a[2][0]=='X')                //this condition checks the values in diagonal boxes
           return 1;                                                         //it the above statement is true it returns value 1

}
int condition2()            //a funtion which return integer value if any of the given condition is true...THIS CONDITION IS FOR PLAYER 2
{
   
      if ( a[0][0]=='O' && a[0][1]=='O' && a[0][2]=='O'   ||   a[1][0]=='O' && a[1][1]=='O' && a[1][2]=='O'   ||   a[2][0]=='O' && a[2][1]=='O' && a[2][2]=='O' )         //this condition checks all the horizontal rows values one by one and returns 2 if condition is true for any horizontal row
           return 2;
      else if ( a[0][0]=='O' && a[1][0]=='O' && a[2][0]=='O'   ||   a[0][1]=='O' && a[1][1]=='O' && a[2][1]=='O'   ||   a[0][2]=='O' && a[1][2]=='O' && a[2][2]=='O' )     //this condition checks all the vertical column values one by one and returns 2 if condition is true for any column row
           return 2;
      else if ( a[0][0]=='O' && a[1][1]=='O' && a[2][2]=='O')          //this condition checks the principle diagonal values and returns 2 if condition is true. AND operator is used because all conditions in that statement should be true in order to return 2
           return 2;
      else if ( a[0][2]=='O' && a[1][1]=='O' && a[2][0]=='O')          //this condition checks the values in diagonal boxes
           return 2;                                                   //it the above statement is true it returns value 2

}
int win1()                 //a funtion which declares the winning of player 1 and returns 0 if any condition in  condition1() is true.
{
      if(condition1()==1) //selection statement used to tets the conidition1() function

      printf("\n\n\nCongratulations...!!! Player 1 is the WINNER...!!!\n\n"); //winning declaration printing
 
      return 0;
}
int win2()                //a funtion which declares the winning of player 2 and returns 0 if any condition in  condition2() is true.
{
     if(condition2()==2) //selection statement used to tets the conidition2() function

     printf("\n\n\nCongratulations...!!! Player 2 is the WINNER...!!!\n\n\n"); //winning declaration printing

     return 0;
}
void toe()      //void function used which returns nothing. It is just printed to tell the user about the box number for selection
{
     printf("\n\t\t\t 1 | 2 | 3 \n\t\t\t___|___|___\n\t\t\t 4 | 5 | 6 \n\t\t\t___|___|___\n\t\t\t 7 | 8 | 9 \n\t\t\t   |   |   \n\n\n");
}
void print1()   //a funtion which  when user enter the box number print the value in selected box according to the user selection
{
     printf("\a\a\n\t\t\t %c | %c | %c \n\t\t\t___|___|___\n\t\t\t %c | %c | %c \n\t\t\t___|___|___\n\t\t\t %c | %c | %c \n\t\t\t   |   |   \n\n\n\a\a",a[0][0],a[0][1],a[0][2],a[1][0],a[1][1],a[1][2],a[2][0],a[2][1],a[2][2]);
}
void design()
{
 //    char *pt1,*pt2; //pointers which gets the address of character and pass it to the s1 and s2
   //  pt1=st.s1;      //assigning the pointer 1 to an array object of data structure
    // pt2=st.s2;      //assigning the pointer 2 to an array object of data structure

     name(st.s1,st.s2);        //name function declared above is called here
   
system("cls");            // screen clearing

     for ( i=1 ; i<10 ; i++ )  //simple for loop from 1 to 9
      {
         phir:               //reference name for goto statement
            toe();           //toe funtion made above is called here
              if(i%2==1)     //selection statement which select the player's turn. if remainder of any value of i and 2 is 1 then it's player one's turn otherwise it's player 2's turn
                  {
                      printf(" %s's Turn : ",st.s1);              //if i%2 gives remainder 1 then name of player 1 is used
                  }
              else
                  {
                      printf(" %s's Turn : ",st.s2);              //if i%2==1 is false then player 2's turn is announced
                  }
      st.ch = ( getche()-48 );                                    //this gets an integer input from user in box and print it as character
      if ( st.ch<0 || st.ch>9 )                                   //check condition which checks if value enetered by user is greater than 9 or lesser than zero then next block is printed otherwise next block is skipped
      {
         printf("\n\n\nYou have chosen wrong block...!!!\n\n\n"); //if selected box by user is less than 0 and greater than 9 then it prints that the user has choosen wrong box.
         system("pause");                                         //to pause the program
         system("cls");                                           //to clear the screen
         goto phir;                                               //goto statement which goes to phir declared above and check all the condition above again
      }
      switch(st.ch)                                               //switch selection statement
      {
         case 1 :                                                 // in switch selection statement we use cases for checking conditions
     
               if(a[0][0]=='X' || a[0][0]=='O')                  //checks value enetered in 1x1 by user
     
           {
                    filled();                                     // checks weather the box is filled or not
                    break;                                        //break statement used to terminate filled funtion
                }
     
           if(i%2==1)                                        // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
     
          {
                    a[0][0]='X';                                  //enter X character in place of integer
                    print1();                                     // print the game box which helps the user for selecting box number
                    win1();                                       //checks the condition that player 1 wins or not
                    system("pause");                              //system funtion used to pause
                    system("cls");                                //for clearing screen
                    break;                                        //break statement for player 1
               }
       
          else                                                    //if above if condition is false this else condition is used
       
          {
                    a[0][0]='O';                                 //enter O character in place of integer
                    print1();                     //print the game box which helps the user for selecting box number
                    win2();       //checks the condition that player 2 wins or not
                    system("pause");  //system funtion used to pause
                    system("cls");   //for clearing screen
                    break; //break statement for player 2
               }
            break; //break statement for case 1
   
         case 2 : //2nd possibility of value enetered by user
             
         if(a[0][1]=='X' || a[0][1]=='O') //checks value enetered in 1x2 by user
                {
                    filled(); // checks weather the box is filled or not
                    break; //break statement used to terminate filled funtion
                }
                if(i%2==1)  // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[0][1]='X'; //enter X character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win1();   //checks the condition that player 1 wins or not
                    system("pause");   //system funtion used to pause
                    system("cls");     //for clearing screen
                    break;   //break statement for player 1
                }
          else   //if above if condition is false this else condition is used
                {
                    a[0][1]='O'; //enter O character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win2();     //checks the condition that player 2 wins or not
                    system("pause");   //system funtion used to pause
                    system("cls");    //for clearing screen
                    break;   //break statement for player 2
}
            break; //break statement for case 2
       
case 3 : //3rd possibility of value enetered by user
             
         if(a[0][2]=='X' || a[0][2]=='O') //checks value enetered in 1x3 by user
                {
                    filled(); // checks weather the box is filled or not
                    break; //break statement used to terminate filled funtion
                }

                if(i%2==1) // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[0][2]='X'; //enter X character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win1(); //checks the condition that player 1 wins or not
                    system("pause");  //system funtion used to pause
                    system("cls");    //for clearing screen
                    break; //break statement for player 1
}
          else     //if above if condition is false this else condition is used
                {
                    a[0][2]='O';  //enter O character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win2();   //checks the condition that player 2 wins or not
                    system("pause");   //system funtion used to pause
                    system("cls");     //for clearing screen
                    break; //break statement for player 2
                }
            break; //break statement for case 3
       
case 4 : //fourth possibility of value enetered by user
             
         if( a[1][0]=='X' || a[1][0]=='O' ) //checks value enetered in 2x1 by user
                {
                    filled();   // checks weather the box is filled or not
                    break; //break statement used to terminate filled funtion
                }

                if (i%2==1)   // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[1][0]='X'; //enter X character in place of integer
                    print1();                                   // print the game box which helps the user for selecting box number
                    win1();                                    //checks the condition that player 1 wins or not
                    system("pause");                            //system funtion used to pause
                    system("cls");                               //for clearing screen    
                    break;                                   //break statement for player 1
}
          else                                                //if above if condition is false this else condition is used
                {
                    a[1][0]='O';                                 //enter O character in place of integer
                    print1();                                    // print the game box which helps the user for selecting box number
                    win2();                                      //checks the condition that player 2 wins or not
                    system("pause");                           //system funtion used to pause
                    system("cls");                              //for clearing screen
                    break;                                    //break statement for player 2
                }
            break;                                            //break statement for case 4
       
case 5 :                                            //fifth possibility of value enetered by user
             
         if( a[1][1]=='X'  ||  a[1][1]=='O' )        //checks value enetered in 2x2 by user
                {
                    filled();                                 // checks weather the box is filled or not
                    break;                                   //break statement used to terminate filled funtion
                }

                if (i%2==1)                                   // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[1][1]='X';                                   //enter X character in place of integer
                    print1();                                    // print the game box which helps the user for selecting box number
                    win1();                                    //checks the condition that player 1 wins or not
                    system("pause");                             //system funtion used to pause
                    system("cls");                              //for clearing screen
                    break;                                   //break statement for player 1
                }
           else                                              //if above if condition is false this else condition is used
                {
                    a[1][1]='O';                            //enter O character in place of integer
                    print1();  // print the game box which helps the user for selecting box number
                    win2();     //checks the condition that player 2 wins or not
                    system("pause");   //system funtion used to pause
                    system("cls");
                    break; //break statement for player 2
                }
            break; //break statement for case 5
     
    case 6 : //sixth possibility of value enetered by user
               
         if ( a[1][2]=='X'  ||  a[1][2]=='O' ) //checks value enetered in 2x3 by user
                {
                    filled();   // checks weather the box is filled or not
                    break; //break statement used to terminate filled funtion
                }

                if (i%2==1)   // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[1][2]='X';   //enter X character in place of integer
                    print1();   // print the game box which helps the user for selecting box number
                    win1();  //checks the condition that player 1 wins or not
                    system("pause");   //system funtion used to pause
                    system("cls");     //for clearing screen
                    break;   //break statement for player 1
                }
          else     //if above if condition is false this else condition is used
                {
                    a[1][2]='O'; //enter O character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win2();   //checks the condition that player 2 wins or not
                    system("pause");  //system funtion used to pause
                    system("cls");     //for clearing screen
                    break; //break statement for player 2
                }
            break; //break statement for case 6
       
case 7 : //7th possibility of value enetered by user
               
               if ( a[2][0]=='X'  ||  a[2][0]=='O' ) //checks value enetered in 3x1 by user
                {
                    filled();  // checks weather the box is filled or not
                    break;  //break statement used to terminate filled funtion
                }

                if (i%2==1) // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[2][0]='X'; //enter X character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win1();  //checks the condition that player 1 wins or not
                    system("pause");   //system funtion used to pause
                    system("cls");    //for clearing screen
                    break;   //break statement for player 1
                }
          else   //if above if condition is false this else condition is used
                {
                    a[2][0]='O'; //enter O character in place of integer
                    print1();  // print the game box which helps the user for selecting box number
                    win2();   //checks the condition that player 2 wins or not
                    system("pause");  //system funtion used to pause
                    system("cls");    //for clearing screen
                    break;   //break statement for player 2
                }
            break;   //break statement for case 7
       
case 8 : //8th possibility of value enetered by user
               
         if ( a[2][1]=='X'  ||  a[2][1]=='O' ) //checks value enetered in 3x2 by user
                {
                    filled();   // checks weather the box is filled or not
                    break;   //break statement used to terminate filled funtion
                }

                if (i%2==1) // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                    a[2][1]='X';   //enter X character in place of integer
                    print1();  // print the game box which helps the user for selecting box number
                    win1();  //checks the condition that player 1 wins or not
                    system("pause");  //system funtion used to pause
                    system("cls");    //for clearing screen
                    break; //break statement for player 1
                }
          else     //if above if condition is false this else condition is used
                {
                    a[2][1]='O'; //enter O character in place of integer
                    print1(); // print the game box which helps the user for selecting box number
                    win2();     //checks the condition that player 2 wins or not
                    system("pause");  //system funtion used to pause
                    system("cls");    //for clearing screen
                    break;   //break statement for player 2
                }
            break; //break statement for case 8
       
case 9 : //9th possibility of value enetered by user
               
         if ( a[2][2]=='X'  ||  a[2][2]=='O' ) //checks value enetered in 3x3 by user
                {
                    filled();  // checks weather the box is filled or not
                    break;  //break statement used to terminate filled funtion
                }

                if (i%2==1) // player 1 selection...if i%2 gives remainder 1 then it is player 1's turn otherwise player 2's turn
                {
                     a[2][2]='X';  //enter X character in place of integer
                     print1(); // print the game box which helps the user for selecting box number
                     win1(); //checks the condition that player 1 wins or not
                     system("pause");   //system funtion used to pause
                     system("cls");     //for clearing screen
                     break; //break statement for player 1
                }
          else   //if above if condition is false this else condition is used
                {
                     a[2][2]='O'; //enter O character in place of integer
                     print1(); // print the game box which helps the user for selecting box number
                     win2();     //checks the condition that player 2 wins or not
                     system("pause");   //system funtion used to pause
                     system("cls");     //for clearing screen
                     break; //break statement for player 2
                }
            break;  //break statement for case 9
    }
  }
}
void gameloading()
{
      system("cls");      //for clearing screen
      int length_of_loading_bar=0,timer=0;    //initializing the length of bar for delay and timer for the speed of delaying
      printf("\n\n\n\n\n\n\n\n\n\n\t\t\t   GaMe iS LoAdInG...");  //Loading indication
      printf("\n\t\t\t  ");
      for(length_of_loading_bar=0;length_of_loading_bar<20;length_of_loading_bar++) //loop for the horizontal length of bar
             {
                   for(timer=0;timer<10000000;timer++); //semi colon is used bcoz we don't want to print anything vertically instead we want to count time...here we are using loop as counter
                    printf("%c",182); //special symbol askey value 182 is used for 19 times printing of special symbol
             }
      printf("\n"); //to print on new line
      system("cls");       //for clearing screen
}

//Exercise 2: Write a C Program to read the contents of file ‘File1’ and paste the contents at the beginning of another file ‘File2’ without taking help of any extra file.

//Exercise 2: Write a C Program to read the contents of file ‘File1’ and paste the contents at the beginning of another file ‘File2’ without taking help of any extra file.
#include<stdio.h>
void header()
{
   printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
   printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");
}

int main()
{
    FILE *a,*b;
    char f_1[100],f_2[100],ch;
    header();
    system("pause");
    system("cls");
    a=fopen("source.txt" , "w");
    if(a==NULL)
    {
        printf("\nOooppsss Unable to Open.....!!!");
        return 1;
    }
    printf("Write any text in File or Ctrl+Z to Exit the Program : ");
    gets(f_1);
    while(!feof(stdin))
    {
        fprintf(a,"%s",f_1);
        gets(f_1);
    }
    fclose(a);
    printf("\n\nEnter the name of Source File : ");
    gets(f_1);
    a=fopen(f_1 , "r");
    if (a==NULL)
    {
        printf("\nOooppsss .... Unable to Open the File....!!!");
        return 1;
    }
    printf("\n\nEnter the name of Target File in which you want to copy the Data :  ");
    gets(f_2);
    b=fopen(f_2,"w");
    if(b==NULL)
    {
        printf("\nOoooOOoopsss... Unable to Open the File....!!!");
        return 1;
    }
    while(!feof(a))
    {
        ch=fgetc(a);
        putc(ch,b);
    }
    fclose(a);
    fclose(b);
    printf("\n\n\t\tCongratulations....!!!!");
    printf("\n\n\t\tFile Has Been Copied Successfully...!!!\n\n");

}

//Exercise 1: Write a C Program to open a file named “DATA” and write a line of text in it by reading the text from the keyboard.

//Exercise 1: Write a C Program to open a file named “DATA” and write a line of text in it by reading the text from the keyboard.
#include<stdio.h>
void header()
{
    printf("\n\n\n\n\n\n\n\t\tBUILT AND DESIGNED BY >> ARSLAN UD DIN SHAFIQ\n\n\t\tWebsite>>\twww.CWorldbyAS.blogspot.com\n");
    printf("\n\t\tCOMSATS Institute of Information Technology,\n\n\t\t\t\t\t  Lahore , Pakistan\n\n\n");

}
int main()

{
    FILE *f;
    char a[500];
   header();
   system("pause");
   system("cls");
    f=fopen("DATA.txt" , "w");
    if (f==NULL)
    {
        printf("\nUnable to Open File ....!!");
        return 1;
    }
    printf("\nEnter any Line to Write in File : ");
    gets(a);
    while(!feof(stdin))
    {
        fprintf(f,"%s",a);
        printf("\nEnter any Line to Write in File Ctrl + Z to exit the program : ");
        gets(a);
    }
    fclose(f);
    printf("\nFile Has been created Successfully....!!!\n\n\n\n");

}

Assignment # 3

BS(SE) Semester – 1

CSC-102 Discrete Structures (Section – A)

Dr. Mudasser Naseer

Issue Date:21-04-2014 

Due date: 28-04-2014 (Monday)

Solve the following questions.         

Total Marks: [5 +5+3=13]

Solve the following questions from Sixth Edition by Rosen.

Exercise Section 4.1

Q. 1. Use mathematical induction to prove the statement that

Q. 2. Draw the graphs represented by the given adjacency matrix. Decide yourself weather a directed or undirected graph is required.

                                 Q. 3. Draw the graphs represented by the given  incidence matrix.