How to find factorial of any number?

CODE

How to find factorial of any number?

int main()

{

    int i,a,fact=1;

    printf("\n enter the number=");

    scanf("%d",&a);

    for(i=1;i<=a;i++)

        fact*=i;

    printf("\n factorial=%d",fact);

}

Output:

enter the number=

 4

 factorial=24