项目1"/>
第12周项目1
问题及代码:
/**copyright (t) 2016,烟台大学计算机学院*All rights reserved.*文件名称:test.cpp*作者:张晴晴*完成日期:2016年5月25日*版本号:v1.0*问题描述:
(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
(2)请用类的友元函数,而不是成员函数,再次完成上面提及的运算符的重载;*输入描述:*程序输出:*/#include<iostream>
using namespace std;
class Complex
{
public:Complex(){real=0;imag=0;}//默认构造函数Complex(double r,double i){real=r; imag=i;}//构造函数friend Complex operator+(Complex &c1,Complex &c2);friend Complex operator-(Complex &c1,Complex &c2);friend Complex operator*(Complex &c1,Complex &c2);friend Complex operator/(Complex &c1,Complex &c2);void display();private:double real;double imag;
};
//下面定义成员函数Complex operator+(Complex &c1,Complex &c2){Complex c;c.real=c1.real+c2.real;c.imag=c2.imag+c2.imag;return c;}Complex operator-(Complex &c1,Complex &c2){Complex c;c.real=c1.real-c2.real;c.imag=c1.imag-c2.imag;return c;}Complex operator*(Complex &c1,Complex &c2){Complex c;c.real=c1.real*c2.real-c2.imag*c2.imag;c.imag=c1.imag*c2.real+c2.real*c2.imag;return c;}Complex operator/(Complex &c1,Complex &c2){Complex c;c.real=(c1.real*c2.real+c1.imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);c.imag=(c1.imag*c2.real-c1.real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);return c;}void Complex:: display(){cout<<"("<<real<<","<<imag<<"i)"<<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:
学习心得:
一个对象作为函数参数,以值传递的方式传入函数体,用&拷贝,友缘函数的定义跟一般函数一样,不用加冒号。
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第12周项目1
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