题目描述

While循环法

样例

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

int main ()
{
    int s=0,m=0,h=0;
    cin >> s;

    while ( s - 60 > 0 )  m++ , s -= 60;
    while ( m - 60 > 0 )  h++ , m -= 60;

    cout << h << ":" << m << ":" << s ;
    return 0;
}