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: ...
//vectors:overloadingoperatorsexample#includeclassCVector{public:intx,y;CVector(){};CVector(int,int);CVectoroperator+(CVector);};CVector::CVector(inta,intb){x=a;y=b;}CVectorCVector::operator+(CVectorparam){CVectortemp;temp.x=x+param.x;temp.y=y+param.y;return(temp);}intmain(){...
分类: C/C++ 操作符重载有两种方式,一是以成员函数方式重载,另一种是全局函数。先看例子#include <iostream>#include <string>using namespace std;/* defualt operator= differ from my own one.* assign 0 or 1 to TEST_EQ, look the diference*/...
Operator overloading in C++ allows us to write natural expressions like d = a + b / c; with our own classes. The above expression could be equal to d = a.add(b.divide(c)); which results in hard to read code. Operator overloading by Example This example will add basic arithmeti...
分类: C/C++ 操作符重载有两种方式,一是以成员函数方式重载,另一种是全局函数。 先看例子 #include <iostream> #include <string> using namespace std; /* defualt operator= differ from my own one. * assign 0 or 1 to TEST_EQ, look the diference*/ ...
The return types are limited by the expressions in which the operator is expected to be used: for example, assignment operators return by reference to make it possible to write a = b = c = d, because the built-in operators allow that. ...
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 + ...
Let’s explain what operator overloading is all about with an example of a class that represents a date. Would it not be great if we could subtract two date objects and be returned an int representing the number of days elapsing between the two dates. We would like to use the good old...
Example 1: Overloading Using Different Types of Parameter // Program to compute absolute value// Works for both int and float#include<iostream>usingnamespacestd;// function with float type parameterfloatabsolute(floatvar){if(var <0.0)
【转】Operator Overloading Thinking in C++, 2nd ed. Volume 1 ©2000 by Bruce Eckel Unary operators The following example shows the syntax to overload all the unary operators, in the form of both global functions (non-member friend functions) and as member functions. These will expand upon...