Question

我试图弄清楚如何同时显示军事和标准时间。

用户输入时间，然后以标准格式显示。

它主要在那里，但标准时间部分给了我一些问题。

#ifndef TIME_H
#define TIME_H

class Time
{
public:
    Time(int = 0, int = 0, int = 0);
    ~Time();
    int hour; // valid values are 0 to 23
    int minute; // valid values are 0 to 59
    int second; // valid values are 0 to 59
    void setTime(int, int, int); // function that checks if inputs are valid
    void printUniversal(); // prints in HH:MM:SS format
    void printStandard(); // prints in HH:MM:SS AM/PM format
    static int count; //counter
};

#endif




#include "stdafx.h"
#include "Time.h" //header file that contains the Time class file
#include <iostream>
#include <iomanip>
#include <ctime>

using namespace std;

int Time::count = 12;

Time::Time(int hr, int min, int sec)
{
    hour = hr; minute = min; second = sec;
    count++;
}


Time::~Time()
{
    count--;
}

void Time::setTime(int hr, int min, int sec)
{
    hour = (hr >= 0 && hr < 24) ? hr : 0; // checks if hour input is valid
    minute = (min >= 0 && min < 60) ? min : 0; // checks if minute input is valid
    second = (sec >= 0 && sec < 60) ? sec : 0; // checks if seconds input is valid
}



void Time :: printUniversal()
{
    cout << setfill('0') << setw(2) << hour << ":" << setw(2) << minute << ":" << setw(2) << second;
}

void Time::printStandard()
{
    cout << ((hour == 0 || hour == 12) ? 12 : hour % 12) << ":" << setfill('0') << setw(2) << minute << ":" << setw(2) << second << (hour < 12 ? " AM" : " PM");
}


//(Where I implement the functions - main.cpp)
#include "Time.h"
#include <iostream>
using namespace std;



int main()
{
    int hour, minute, second;

    Time t; //t is the time object //(PROBLEM!!!-Dont understand how to write the correct parameters)
     //test is also a time object //(PROBLEM!!!-Dont understand how to write the correct parameters)
    //Time *tp = new Time;
    //Time *tarray = new Time[5];



    cout << "Enter hour in military time ";
    cin >> hour;
    cout << "Enter minute ";
    cin >> minute;
    cout << "Enter second ";
    cin >> second;



    cout << "\nThe standard time is ";
    t.printStandard(); //(PROBLEM!!!- I have the number 12 appearing right after AM and i can't get rid of it. )
    cout << "\nThe universal time is ";
    t.printUniversal();
    cout << endl;
    return 0;
} // end main

更新：由于发布的建议，错误暂时消失。

然而，现在当我运行它时，我得到了这个......好吧，因为我无法发布图像......

我输入13,45,05并且几乎像旧的录像机一样，我不能在12:00:00标准或00:00:00通用

无论我输入所有相同的输出。

Answer 1

Time t();     // This declares a function named t which takes 
              // no arguments and returns a Time object

Time test();  // This declares a function named test which
              // takes no arguments and returns a Time object

Time t; // this is a default constructed Time object named t
Time t( 12, 7, 5 ); // this is a Time object with all 
                    // parameters passed to the constructor

在printStandard中，你有

<< sizeof(Time)

这是12来自哪里。 Time类类型的对象在内存中占用12个字节。

我强烈建议你读一本关于C ++的书，因为所有这些都将在那里解释。

如何同时获得军事和标准时间？

1 个答案: