求解哪里出错了运算符重载

Marvelous1988 2013-05-10 12:27:40

#include <iostream>

#include <cmath>

using namespace std;

class MyTime{

    private:

        int hours;

        int mins;

    public:

        MyTime();

        MyTime(int h,int m);

        void addMins(int m);

        void addHours(int h);

        void display();

        MyTime operator-(const MyTime& mt)const ;

        MyTime operator+(const MyTime& mt)const ;

        bool operator>=(const MyTime& mt) const;

        bool operator<=(const MyTime& mt) const;

        bool operator<(const MyTime& mt) const;

        bool operator!=(const MyTime& mt) const;

        };

void MyTime::addMins(int m){

        mins+=m;

}

void MyTime::addHours(int h){

        hours+=h;

}

void MyTime::display(){

    if(mins>=0){

        hours+=mins/60;

        mins%=60;

        }

else{

    hours--;

    hours-=abs(mins)/60;

    mins=abs(mins)%60;

}

    cout<<hours<<endl;

    cout<<mins<<endl;

}

MyTime  MyTime::operator+(const MyTime& mt) const{

        MyTime T;

        T.mins=mins+mt.mins;

        T.hours=hours+mt.hours;

        return T;

}

MyTime MyTime::operator-(const MyTime & mt) const{

        MyTime T;

        T.mins=mins-mt.mins;

        T.hours=mins-mt.mins;

        return T;

}

bool MyTime::operator>=(const MyTime & mt) const{

    return (hours*60+mins)>=(mt.hours*60+mt.mins);

}



bool MyTime::operator<(const MyTime & mt) const{

    return (hours*60+mins)<(mt.hours*60+mt.mins);

}



bool MyTime::operator<=(const MyTime & mt) const{

    return (hours*60+mins)<=(mt.hours*60+mt.mins);

}



bool MyTime::operator!=(const MyTime & mt) const{

    return (hours*60+mins)!=(mt.hours*60+mt.mins);

}

...全文

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折翼断JJ 2013-05-10

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#include <iostream>
#include <cmath>
using namespace std;
class MyTime{
    private:
        int hours;
        int mins;
    public:
        MyTime();
        MyTime(int h,int m);
        void addMins(int m);
        void addHours(int h);
        void display();
        MyTime operator-(const MyTime & mt)const ;
        MyTime operator+(const MyTime& mt)const ;
        bool operator>=(const MyTime& mt) const;
        bool operator<=(const MyTime& mt) const;
        bool operator<(const MyTime& mt) const;
        bool operator!=(const MyTime& mt) const;
        };
int main()//为了完整加的
{
	MyTime mytime(5,3);
	mytime.display();
	return 0;
}
MyTime::MyTime()//这个函数原来没定义，加上就好了
{
	hours=mins=0;
}
MyTime::MyTime(int h,int m)//这个也是
{
 hours=h;
 mins=m;
}
void MyTime::addMins(int m){
        mins+=m;
}
void MyTime::addHours(int h){
        hours+=h;
}
void MyTime::display(){
    if(mins>=0){
        hours+=mins/60;
        mins%=60;
	}
	else{
		hours--;
		hours-=abs(mins)/60;
		mins=abs(mins)%60;
	}
    cout<<hours<<endl;
    cout<<mins<<endl;
}
MyTime MyTime::operator+(const MyTime& mt) const{
	MyTime T;
	T.mins=mins+mt.mins;
	T.hours=hours+mt.hours;
	return T;
}
MyTime MyTime::operator-(const MyTime & mt) const{
	MyTime T;
	T.mins=mins-mt.mins;
	T.hours=mins-mt.mins;
	return T;
}
bool MyTime::operator>=(const MyTime & mt) const{
    return (hours*60+mins)>=(mt.hours*60+mt.mins);
}

bool MyTime::operator<(const MyTime & mt) const{
    return (hours*60+mins)<(mt.hours*60+mt.mins);
}

bool MyTime::operator<=(const MyTime & mt) const{
    return (hours*60+mins)<=(mt.hours*60+mt.mins);
}

bool MyTime::operator!=(const MyTime & mt) const{
    return (hours*60+mins)!=(mt.hours*60+mt.mins);
}

Marvelous1988 2013-05-10

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这道题是帮朋友问的我还没学到这帮不了他感谢大家

derekrose 2013-05-10

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难道你认为构造函数是不用定义的吗？还是说你希望编译器帮你定义？

hugett 2013-05-10

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#include <iostream>
#include <cmath>
using namespace std;
class MyTime{
    private:
        int hours;
        int mins;
    public:
		MyTime(){}//
		MyTime(int h,int m): hours(h), mins(m){}//这两个函数没定义
        void addMins(int m);
        void addHours(int h);
        void display();
        MyTime operator-(const MyTime& mt)const ;
        MyTime operator+(const MyTime& mt)const ;
        bool operator>=(const MyTime& mt) const;
        bool operator<=(const MyTime& mt) const;
        bool operator<(const MyTime& mt) const;
        bool operator!=(const MyTime& mt) const;
        };
void MyTime::addMins(int m){
        mins+=m;
}
void MyTime::addHours(int h){
        hours+=h;
}
void MyTime::display(){
    if(mins>=0){
        hours+=mins/60;
        mins%=60;
        }
else{
    hours--;
    hours-=abs(mins)/60;
    mins=abs(mins)%60;
}
    cout<<hours<<endl;
    cout<<mins<<endl;
}
MyTime  MyTime::operator+(const MyTime& mt) const{
        MyTime T;
        T.mins=mins+mt.mins;
        T.hours=hours+mt.hours;
        return T;
}
MyTime MyTime::operator-(const MyTime & mt) const{
        MyTime T;
        T.mins=mins-mt.mins;
        T.hours=mins-mt.mins;
        return T;
}
bool MyTime::operator>=(const MyTime & mt) const{
    return (hours*60+mins)>=(mt.hours*60+mt.mins);
}

bool MyTime::operator<(const MyTime & mt) const{
    return (hours*60+mins)<(mt.hours*60+mt.mins);
}

bool MyTime::operator<=(const MyTime & mt) const{
    return (hours*60+mins)<=(mt.hours*60+mt.mins);
}

bool MyTime::operator!=(const MyTime & mt) const{
    return (hours*60+mins)!=(mt.hours*60+mt.mins);
}