魔法数字变换

#include <bits/stdc++.h>
using namespace std;

int main(void)
{
    int n;
    cin >> n;
    int step = 0;
    while (n != 1) 
    {
        if (n % 2 == 0) 
            n = n / 2;
        else
            n = n * 3 + 1;
       step++;
    }
    cout << step;
    return 0;
}