Below is an example of Factorial Program in C using loop:
#include<stdio.h>
int main()
{
int i, factorial=1,num;
printf(“Enter the Number: ”);
scanf(“%d”, &num);
for(i=1; i<=num; i++)
{
factorial = factorial*i;
}
printf(“Factorial of %d is= %d”, num, factorial);
return 0;
}