问题:
(1)请用类的成员函数,定义复数类重载运算符+、-、*、/,使之能用于复数的加减乘除
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(); private: double real; double imag; }; //下面定义成员函数 //下面定义用于测试的main()函数 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; }
代码
/* * Copyright (c) 2015, 烟台大学计算机学院 * All rights reserved. * 文件名称:test.cpp * 作 者:冷基栋 * 完成日期:2015年 4 月 23 日 * 版 本 号:v1.0 */ #include <iostream> using namespace std; 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(); private: double real; double imag; }; //下面定义成员函数 //相加: (a+bi)+(c+di)=(a+c)+(b+d)i. Complex Complex::operator+(const Complex &c2) { Complex c; c.real=real+c2.real; c.imag=imag+c2.imag; return c; } //相减: (a+bi)-(c+di)=(a-c)+(b-d)i. Complex Complex::operator-(const Complex &c2) { Complex c; c.real=real-c2.real; c.imag=imag-c2.imag; return c; } //相乘: (a+bi)*(c+di)=(ac-bd)+(bc+ad)i. Complex Complex::operator*(const Complex &c2) { Complex c; c.real=real*c2.real-imag*c2.imag; c.imag=imag*c2.real+real*c2.imag; return c; } //相减: (a+bi)/(c+di)=(ac+bd)/(cc+dd)+(bc-ad)i/(cc+dd). Complex Complex::operator/(const Complex &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::display() { cout<<"("<<real<<","<<imag<<")"<<endl; } //下面定义用于测试的main()函数 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; }
运行结果:
练手
学习心得:
好好学习 天天向上 加油
原文地址:http://blog.csdn.net/ljd939952281/article/details/45219093