总结运算符重载的方法

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总结运算符重载的用法

以重载运算符’+’为例：

1.声明运算符重载函数:

class complex

{

public:

complex operator+(complex &c1);

private:

double real;

double imag;

};

//重载运算符函数的实现

complex complex::operator+(complex &c1)

{

return(real+c1.real,imag+c2.imag);

}

2.声明运算符重载函数：

class complex

{

public:

complex operator+(complex &c1，complex &c2);

private:

double real;

double imag;

};

//重载运算符函数的实现

complex complex::operator+(complex &c1,complex &c2)

{

return (c1.real+c2.real,c1.imag+c2.imag);

}

3.声明运算符重载函数：

class complex

{

public:

complex operator+(complex &c1);

private:

double real;

double imag;

};

//重载运算符函数的实现

complex complex::operator+(complex &c1)

{

double r,t;

r = real+c1.real;

t = imag+c1.imag;

return(complex(t,r));

}

4.声明运算符重载函数：

class complex

{

public:

complex operator+(complex c1);

private:

double real;

double imag;

};

//重载运算符函数的实现

complex complex::operator+(complex c1)

{

complex t;

t.real = c1.real+real;

c.imag = c1.imag+imag;

return complex(t.real,t.imag);

}