错误:类的重新定义(C ++) [英] Error: Redefinition of Class (C++)

问题描述

我试图弄清楚为什么出现以下错误:

I'm trying to figure out why I'm getting the following error:

错误:重新定义"TimeDuration"

// TimeDuration.cpp

#define HOUR 3600
#define MIN 60

#include <iostream>
#include <string>
#include "TimeDuration.h"

using namespace std;

TimeDuration::TimeDuration() {
    seconds = 0;
}

void TimeDuration::setDuration(const int sec) {
    seconds = sec;
}

void TimeDuration::display() {
    // Some code to display the time
}

该错误显示在我的头文件中.

The error is showing in my header file.

// TimeDuration.h

class TimeDuration {
    private:
        int seconds;
    public:
        TimeDuration();                     
        void setDuration(const int sec);    
        void display();                     
};

推荐答案

该错误可能是因为您在TimeDuration.h中没有标题保护.

The error is probably because you don't have header guards in TimeDuration.h

标头保护的一种标准方法是在文件的开头写入:

A standard way to header guard is to at the beginning of the file write:

#ifndef TIME_DURATION_H
#define TIME_DURATION_H

并在文件末尾:

#endif

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