Week eighth item one-operator overloading in the plural class (1)

Problem:

(1) Use the member function of the class to define the plural class overloaded operator + 、-、 *,/, so that it can be used for the subtraction of a complex number

Class Complex {public:    Complex () {real=0;imag=0;}    Complex (double r,double i) {real=r; imag=i;}    Complex operator+ (const Complex &C2);    Complex operator-(const Complex &C2);    Complex operator* (const Complex &C2);    Complex operator/(const Complex &C2);    void display ();p rivate:    double real;    Double imag;};/ /below defines the member function//The following defines the main () function used for testing int main () {    Complex C1 (3,4), C2 (5,-10), C3;    cout<< "c1=";    C1.display ();    cout<< "c2=";    C2.display ();    C3=C1+C2;    cout<< "c1+c2=";    C3.display ();    C3=C1-C2;    cout<< "c1-c2=";    C3.display ();    C3=C1*C2;    cout<< "c1*c2=";    C3.display ();    C3=C1/C2;    cout<< "c1/c2=";    C3.display ();    return 0;}

Code

/* Copyright (c) 2015, Yantai University School of Computer * All rights reserved. * File name: Test.cpp * Author: Lenkidong * Completion Date: April 23, 2015 * version number: v1.0*/#include <iostream>using namespace Std;class comple    X{public:complex () {real=0;imag=0;}    Complex (double r,double i) {real=r; imag=i;}    Complex operator+ (const Complex &AMP;C2);    Complex operator-(const Complex &AMP;C2);    Complex operator* (const Complex &AMP;C2);    Complex operator/(const Complex &AMP;C2);    void display ();p rivate:double Real; Double imag;};/    //The following defines member functions//additions: (A+BI) + (C+di) = (a+c) + (b+d) I.complex complex::operator+ (const Complex &AMP;C2) {Complex C;    C.real=real+c2.real;    C.imag=imag+c2.imag; return c;}    Subtraction: (A+BI)-(C+di) = (a-c) + (b-d) I.complex complex::operator-(const Complex &AMP;C2) {Complex C;    C.real=real-c2.real;    C.imag=imag-c2.imag; return c;}    Multiply: (A+BI) * (C+di) = (AC-BD) + (Bc+ad) I.complex complex::operator* (const Complex &AMP;C2) {Complex C;    C.real=real*c2.real-imag*c2.imag; C.imag=imag*c2.real+real*c2.imag; return c;} Subtract: (A+BI)/(C+di) = (AC+BD)/(CC+DD) + (Bc-ad) i/(CC+DD).    Complex complex::operator/(const Complex &AMP;C2) {Complex C;    C.real= (Real*c2.real+imag*c2.imag)/(C2.imag*c2.imag+c2.real*c2.real);    c.imag= (Imag*c2.real-real*c2.imag)/(C2.imag*c2.imag+c2.real*c2.real); return c;} void Complex::d isplay () {cout<< "(" <<real<< "," <<imag<< ")" &LT;&LT;ENDL;}    The following defines the main () function for testing int main () {Complex C1 (3,4), C2 (5,-10), C3;    cout<< "c1=";    C1.display ();    cout<< "c2=";    C2.display ();    C3=C1+C2;    cout<< "c1+c2=";    C3.display ();    C3=C1-C2;    cout<< "c1-c2=";    C3.display ();    C3=C1*C2;    cout<< "c1*c2=";    C3.display ();    C3=C1/C2;    cout<< "c1/c2=";    C3.display (); return 0;}

Operation Result:

Practiced hand

Learning experience:

Study hard and cheer up

Week eighth item one-operator overloading in the plural class (1)