8.Factorial using for loop

 #include<stdio.h>

int main(){

    int num,factorial=1;

    printf("Enter a number :");

    scanf("%d",&num);

    for(int i=1; i<=num; i++)

    {

       factorial=factorial*i;

    }

    printf("\nThe factorial of %d is :%d",num,factorial);

    return 0;

}