//function use loop and multiplication//
#include<stdio.h> 
void sq(int i);
int main (void)
{
int i;
printf("i \t j\n - \t -\n");
for(i=1; i<=5; i++)
sq(i);
return 0;
}
void sq(int i)
{
printf("%d \t %d \n", i, i*i);
}

i 	 j
 - 	 -
1 	 1 
2 	 4 
3 	 9 
4 	 16 
5 	 25