[C++知识库]20 C++ 秒数转换时分秒

输入秒数，转化成小时分钟秒的格式。比如输入3601，则输出01：00：01，不足两位数的，用前置0补齐。小时数可以超过两位数。

#include <iostream>
#include <string>
#include <iomanip>
using namespace std;

int conversion_time_fun() {
	double input_seconds ;
	double seconds,minutes,hours;
	int seconds02,minutes02, hours02;

	cout << "请输入秒数:" << endl;
	cin >> input_seconds;
	
	//	计算小时
	hours = input_seconds / 60 / 60;  // 1
	hours02 = (int)hours;
	//cout << hours02 << endl;

	// 计算分钟
	minutes = input_seconds / 60;
	if (minutes >= 60) {
		//cout << minutes << endl;
		//cout << 60 * hours02 << endl;
		minutes02 = minutes - 60 * (double)hours02;
	}
	else {
		minutes02 = minutes;
	}
	//cout << minutes02 << endl;

	// 计算秒数
	seconds = (60 * 60 * hours02) + (60 * minutes02);
	seconds02 = input_seconds - seconds;
	//cout << input_seconds << endl;
	//cout << seconds << endl;
	//cout << seconds02 << endl;

	// 输出格式
	//cout << setw(2) << hours02 <<":" << setw(2) << minutes02 << ":" << setw(2) << seconds02 << endl;
	printf("时间：%02d:%02d:%02d", hours02, minutes02, seconds02); // 自动填充0,2代表填充的个数（位数）

	return 0;
}

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