factorial using recursion

#include <stdio.h>
int fact(int n){
        if(n ==0 || n==1){
    return 1;
        }
        else {
    return n *fact(n-1);
        }
}

int main(){
puts("Enter a number");
int n;
scanf("%d", &n);
printf("%d! = %d", n, fact(n));
return 0;

}