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 程式師世界 >> 編程語言 >> C語言 >> C++ >> C++入門知識 >> c++ 復合運算與重載相關

c++ 復合運算與重載相關

編輯:C++入門知識

c++ 復合運算與重載相關


c++復合運算 成員函數,友元,運算符重載。  代碼基於Visual Studio 2013 update 4 Etc.   // diyTypeCal.cpp : 定義控制台應用程序的入口點。 //   #include "stdafx.h" #include<iostream> //復數運算 class Complex { protected: double real; double imag;   public: Complex(double r =0.00,double i =0.00){ real = r; imag = i; } void outPut();   //Complex add(Complex c); //Complex add(double r); ////通過友元進行非成員函數運算 //friend Complex add(Complex c1, Complex c2); //friend Complex add(Complex c, double r); //friend Complex add(double r, Complex c); ////運算符重載 //Complex operator +(Complex c); //Complex operator +(double r); //補個乘法 Complex operator*(Complex c); Complex operator*(double r); //通過友元進行非成員函數運算符重載 friend Complex operator+(Complex c1, Complex c2); friend Complex operator+(Complex c,double r); friend Complex operator+(double r, Complex c);   };   Complex Complex::operator*(Complex c){ return Complex(real * c.real - imag* c.imag, real*c.imag + imag * c.real); } Complex Complex::operator*(double r){ return Complex(real *r, imag * r); } ////運算符重載函數 //Complex Complex::operator+(Complex c){ //    return Complex(real+c.real,imag+c.imag); //} //Complex Complex::operator+(double r){ //    return Complex(real+r,imag); //}   //通過友元進行非成員函數運算符重載 Complex operator+(Complex c1,Complex c2){ return Complex(c1.real + c2.real, c1.imag + c2.imag); } Complex operator+(Complex c,double r){ return Complex(c.real + r, c.imag); } Complex operator+(double r, Complex c){ return Complex(c.real + r, c.imag); } ////友元運算函數 //Complex add(Complex c1, Complex c2){ //    return Complex(c1.real + c2.real, c1.imag + c2.imag); //} //Complex add(Complex c, double r){ //    return Complex(c.real + r, c.imag); //} //Complex add(double r, Complex c){ //    return Complex(r + c.real, c.imag); //} //通用輸出函數 void Complex::outPut(){ if(imag<0.00) { std::cout <<"("<< real << imag <<"i)"<< std::endl; } else { std::cout <<"("<< real <<"+"<< imag <<"i)"<< std::endl; } } ////成員運算函數 //Complex Complex::add(Complex c){ //    return Complex(real + c.real, imag + c.imag); //} //Complex Complex::add(double x){ //    return Complex(real+x,imag); //}   int _tmain(int argc, _TCHAR* argv[]) { Complex a(1.5,23.43), b(12.12,-45.23); Complex c1, c2, c3, c4,c5; //以上add全部為多態 //c1 = a.add(b); //c2 = b.add(-24.5); //c3 = add(c1, c2); //c4 = add(c3, 5.258); //c5 = c3 + c4; //c1.outPut(); //c2.outPut(); //c3.outPut(); //c4.outPut(); //c5.outPut(); c1 = a + b; c1.outPut(); return0;

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