int fact(int n){
    if(n==1){
        return 1;
    }else{
        return (n*fact(n-1));
    }
}

int main(void){
    printf("%i n",fact(13));
}

function fact(n){
    if (n==1){
        return (1);
    }else{
        return (n*fact(n-1));
    }
}

console.log(fact(13));

def fact(n):
    if(n == 0):
        return 1
    else:
        return n * fact(n - 1)

print(fact(13))