属性:
double imag;
double real;
操作:
Complex() // Simple constructor Body:
{
real = imag = 0.0;
}
Complex(const Complex& c) //Copy constructor Arguments: const Complex& c
主体: {
real = c.real;
imag = c.imag;
}
Complex(double r, double i) // Convert constructor Arguments: double r
double i = 0.0
主体: {
real = r;
imag = i;
}
operator-(Complex c) // Subtraction Return type: Complex
Arguments: Complex c
主体: {
return Complex(real - c.real, imag - c.imag);
}
operator[](int index) // Array subscript Return type: Complex&
Arguments: int index // dummy operator - only
// for instrumentation
// check
主体: {
return *this;
}
operator+(Complex& c) // Addition by value Return type: Complex
Arguments: Complex& c
主体: {
return Complex(real + c.real,imag + c.imag);
}
operator+(Complex* c) // Addition by reference Return type: Complex*
Arguments: Complex *c
主体: {
cGlobal = new Complex (real + c->real,
imag + c->imag);
return cGlobal;
}
operator++() // Prefix increment Return type: Complex&
主体: {
real += 1.0;
imag += 1.0;
return *this;
}
operator=(Complex& c) // Assignment by value Return type: Complex&
Arguments: Complex& c
主体: {
real = c.real,
imag = c.imag;
return *this;
}
operator=(Complex* c) // Assignment by reference Return type: Complex*
Arguments: Complex *c
主体: {
real = c->real;
imag = c->imag;
return this;
}
以下是为这些重载的运算符所生成代码的一些示例。
这是为重载的前缀增量运算符所生成的代码:
Complex& Complex::operator++() {
NOTIFY_OPERATION(operator++, operator++(), 0,
operator_SERIALIZE);
//#[ operation operator++()
real += 1.0;
imag += 1.0;
return *this;
//#]
};
这是为重载的 + 运算符所生成的代码:
Complex Complex::operator+(Complex& c) {
NOTIFY_OPERATION(operator+, operator+(Complex&), 1,
OM_operator_1_SERIALIZE);
//#[ operation operator+(Complex&)
return Complex(real + c.real, imag + c.imag);
//#]
};
这是为第一个重载的赋值运算符所生成的代码:
Complex& Complex::operator=(Complex& c) {
NOTIFY_OPERATION(operator=, operator=(Complex&), 1,
OM_operator_2_SERIALIZE);
//#[ operation operator=(Complex&)
real = c.real;
imag = c.imag;
return *this;
//#]
};
浏览器列出了 MainClass,它是对三个 Complex 类进行实例化的组合体。
其属性如下所示:
Complex* c1
Complex* c2
Complex* c3
Body~MainClass() //DestructorBody
{
delete c1;
delete c2;
delete c3;
}
e() // Event
流输出运算符 << 是一个全局函数,必须声明为希望使用它的类的友元。它如下定义:
operator<<
Return type: ostream&
Arguments: ostream& s
Complex& c
主体:{
s << "real part = " "<< c.real<<
"imagine part = " << c.imag << "\n" << flush;
return s;
}
要观察各种构造函数和重载的运算符在调用时的情况:
