C++编程基础二 12-函数与结构体

// C++函数和类 12-函数与结构体.cpp: 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <iostream>
#include <string>
#include <climits>
#include <math.h>
#include <array>
using namespace std;
 
struct WorkTime
{
    int hours;
    int mins;
};
WorkTime sum(WorkTime t1, WorkTime t2);
const int Mins_per_hour = 60;
int main()
{
    WorkTime morning = { 2,40 };
    WorkTime afternoon = { 6,40 };
    WorkTime day = sum(morning , afternoon);
    cout << "一天一共工作了：" << day.hours << "小时，" << day.mins << "分钟。" << endl;
    return 0;
}

//结构体在函数中可以和某个类型一样使用，作为参数传递或者作为返回值返回
//结构体较大时，为了避免赋值副本，可以使用指针或引用类型
WorkTime sum(WorkTime t1, WorkTime t2)
{
    WorkTime total;
    total.mins = (t1.mins + t2.mins)%Mins_per_hour;
    total.hours = t1.hours + t2.hours + (t1.mins + t2.mins) / Mins_per_hour;
    return total;
}