print asteriks triangle using three for loops

Sample OUTPUT

*
**
***
****
*****
******

#include<stdio.h>
#include<stdlib.h>
void line()
{
int i,j;
printf("\n");
for(i=1;i<=42;i++)
printf("=");
}
void header()
{
printf("\n");
printf("Built and Designed by Arslan Malik\n\n www.CworldbyAS.blogspot.com");
printf("\n");
}
int main()
{
line();
header();
line();
int a,b,c;
printf("\n");
for(a=10;a>=1;a--)

{
   for(b=10;b>=1;b--)
   printf(" ");
   for(c=a;c<=10;c++)
   printf("*");
   printf("\n");
}

line();
return 0;
}