factorial using recursion

//factorial using recurssion

#include <stdio.h>
int fact(n);
int i,n,p;
int main()
{
    printf("which factorial you want:");
    scanf("%d",&p);
    printf("%d",fact(p));
}
int fact(n)
{
    if(n==0)
    {
        return 1;
    }
    else
    {
        return n*fact(n-1);
    }
}