()这样的代码 friend std::ostream& operator<<(std::ostream& os, const Student& stu); public: std::string m_id;//学号 std::string m_name;//姓名 int m_age;//年龄 std::string m_date;//生日 }; std::ostream & operator<<(std::ostream & os, const Student & stu) { //向os输出...
现在让我示范一个overloaded operator的作法,只要在以下类的代码中加入第18~21行的+号的重载代码,即可完成CPoint的加法运算: 1classCPoint{23public:45CPoint()6{7_x=0;89}1011CPoint(floaty){1213_x=y;14}15floatx(){return_x;}16voidx(floatxval){_x=xval;}1718CPointoperator+(constCPoint& pt)co...
MyClass& MyClass::operator=(const MyClass &rhs) { // Check for self-assignment! if (this == &rhs) // Same object? return *this; // Yes, so skip assignment, and just return *this. ... // Deallocate, allocate new space, copy values... return *this; } Or, you can simplify t...
endl; } //在全局范围内重载+ complex operator+(const complex &A, const complex &B){ complex C; C.m_real = A.m_real + B.m_real; C.m_imag = A.m_imag + B.m_imag; return C; } int main(){ complex c1(4.3, 5.8); complex c2(2.4, 3.7); complex c3; c3 = c1 + c2; c3...
Operator Overloading讓我們可以自己定義Operator的功能,讓程式可以更精簡,C#也有,不過不是很強調,但C++非常強調Operator Overloading,這是C++的一大特色。 Introduction 以下程式我們試著實做一個『複數』型別,複數由實部,有虛部,複數的加法為(a + bi) + (c +di) = (a +c) + (b+d)i,乘法則是(a + ...
m_cents); } int main() { Cents c1(6), c2(8); Cents c3 = c1 + c2; Cents c4 = c1 + 2; cout << c3.getCents() << endl; cout << c4.getCents() << endl; return 0; } 和友元函数相比,成员函数的运算符重载只有一个参数。c1看起来变成了前缀。而这里隐藏了*this,即c1.operator...
c1.operator+(c2); Here, the number of arguments to the operator function is reduced by one because the first argument is used to invoke the function. The problem with this approach is, not all the time the first operand is an object of a user-defined type. For example: ...
To understand the need for operator overloading, imagine that you need to perform matrix math operations in your program. You could instantiate a couple 2-dimensional arrays and do what you need. However, add the requirement for the matrix behavior to be reusable. Because you need to do the...
(原創) 如何使用Operator Overloading? (C/C++) 2007-01-18 01:46 − Operator Overloading讓我們可以自己定義Operator的功能,讓程式可以更精簡,C#也有,不過不是很強調,但C++非常強調Operator Overloading,這是C++的一大特色。... 真OO无双 1 56873 相关推荐 (...
31operator--(Integer&a); 32//Postfix: 33friendconstInteger 34operator--(Integer&a,int); 35}; 36 37//Global operators: 38constInteger&operator+(constInteger&a) { 39cout<<"+Integer\n"; 40returna;//Unary + has no effect 41}