本文介绍了基本类型的C ++操作符重载的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何定义一个运算符,其中一个操作数是定义的类型,另一个是int?
我有一个类 Damage
,并在 Damage.h
中定义:
#pragma once
class Damage
{
public:
Damage int = 0,int = 0);
int operator- =(int& num)
{
return num - this-> GetDamage();
}
private:
int damage;
int dotDamage;
int dotDamageLength;
};
我试图在 Monster.cpp
:
#includeMonster.h
#includeDamage.h
int Monster :: TakeDamage(伤害和伤害)
{
this->健康 - =伤害; // Error Here
return this-> health;
}
错误是:
No operator - =matches这些操作数。
操作数类型是int - =损伤。
我也尝试使用
-
操作符,在我的许多尝试中,在类外部定义它,传递两个不同的参数,但没有什么工作。解决方案
这将工作:
class Damage
{
public:
Damage ,int b = 0,int c = 0)
:damage(a),dotDamage(b),dotDamageLength(c)
{
}
int GetDamage()const {return damage;}
private:
int损坏;
int dotDamage;
int dotDamageLength;
};
; operator - =(int& n,const Damage& damage)
{
n - = damage.GetDamage();
return n;
}
int operator - (int n,const Damage& damage)
{
return n - damage.GetDamage();
}
How do I define an operator where one operand is a defined type and the other is an int?I have a classDamage
and defined as such in Damage.h
:
#pragma once
class Damage
{
public:
Damage(int, int = 0, int = 0);
int operator-= (int& num)
{
return num - this->GetDamage();
}
private:
int damage;
int dotDamage;
int dotDamageLength;
};
And I am trying to use the operator like this in Monster.cpp
:
#include "Monster.h"
#include "Damage.h"
int Monster::TakeDamage(Damage& damage)
{
this->health -= damage; // Error Here
return this->health;
}
The error is: "No operator "-=" matches these operands. operand types are int -= damage.
I have also tried using the -
operator too, among my many attempts, defining it outside the class, passing in two different parameters, but nothing has worked yet.
解决方案
This will work:
class Damage
{
public:
Damage(int a, int b = 0, int c = 0)
: damage(a), dotDamage(b), dotDamageLength(c)
{
}
int GetDamage() const { return damage; }
private:
int damage;
int dotDamage;
int dotDamageLength;
};
int& operator -=(int& n, const Damage& damage)
{
n -= damage.GetDamage();
return n;
}
int operator -(int n, const Damage& damage)
{
return n - damage.GetDamage();
}
这篇关于基本类型的C ++操作符重载的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!