void output(std::ostream& out, const Student& student);//输出目的地和对象解耦的函数 void output(std::ostream& out, const Student& student)//具体实现 { out<<stu.m_id<<" " <<stu.m_name<<" " <<stu.m_age<<" " <<stu.m_date<<std:
InsertionOperator(<<)forstdout:<<本来是位左移运算符,但是在C++的标准库iostream中被改头换面,其左侧的运算元(operand)被指定为cout(console output device),右侧运算元是一个内建型别的objects。我们可以利用它很方便的对cout连续输出各种内建型别的数据或信息(也是一种objects),不必像C程序那样需要识别不同类型...
第17行使用member function的方式overload + operator,18行使用global function的方式overload * operator,這兩種寫法都可以,惟若使用global function,由於要存取data menber,所以要宣告該function為friend,這樣才能存取data member。 19行我們overload了<< operator,由於也是global function,所以也要宣告friend。 最後49行...
Test(intx,inty):a{x},b{y}{}// The output operator must be defined as a friend function // and is usually a non-member function. // The input operator is similar.friendostream&operator<< (ostream&,constTest &);friendistream&operator>> (istream&, Test&);friendTestoperator+(constTest...
(img < 0) cout << "Output Complex number: " << real << img << "i"; else cout << "Output Complex number: " << real << "+" << img << "i"; } }; int main() { Complex c1(1.0f, 2.0f); Complex c2(1.0f, 3.0f); // calls the overloaded + operator Complex result = ...
(原創) 如何使用Operator Overloading? (C/C++) 2007-01-18 01:46 − <span class=postbody>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。</span>... ...
Flexible AD using templates and operator overloading in CStauning, Ole
Output operator operator>> takes two arguments: a reference to an output stream and a reference to object to write, it returns as well a reference to the output stream. Run this code #include <iostream> #include <sstream> template <typename T = double> class Complex { public: typedef T...
Output Absolute value of -5 = 5 Absolute value of 5.5 = 5.5 Working of overloading for the absolute() function In this program, we overload theabsolute()function. Based on the type of parameter passed during the function call, the corresponding function is called. ...
friend ostream& operator<<(ostream &os, const className &c1) {...; return os;} return类型是ostream。 同时注意,我们传入的第一个参数是reference,不仅仅防止ostream被copy,同时能允许我们将output命令符锁在一起,cout << c1 << c2 << endl。 2、重载>> 如果c1中有3个成员变量,那么一次性输入3个...