第八周实验报告1.3

实验目的：在方案二的基础上扩充+ - * / 运算符的功能

实验代码：

#include <iostream>#include <cmath>using namespace std;class Complex{public:Complex(){real = 0; imag = 0;}Complex(double r, double i){real = r; imag = i;}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);Complex operator + (double d);Complex operator - (double d);Complex operator * (double d);Complex operator / (double d);    Complex operator - ();void display();private:double real;double imag;};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();c3 = c1 + 2;cout << "c1 + 2 = ";c3.display();c3 = c1 - 4;cout << "c1 - 4 = ";c3.display();c3 = c2 * 2;cout << "c2 * 2 = ";c3.display();c3 = c2 / 2.5;cout << "c2 / 2.5 = ";c3.display();c1 = - c1;cout << "-c1 = ";c1.display();    c2 = - c2;cout << "-c2 = ";c2.display();system("pause");return 0;}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;c.imag = c1.imag - c2.imag;return c;}Complex operator * (Complex &c1, Complex &c2){Complex c;c.real = (c1.real * c2.real) - (c1.imag * c2.imag);c.imag = (c1.imag * c2.real) + (c1.real * c2.imag);return c;}Complex operator / (Complex &c1, Complex &c2){Complex c;c.real = ((c1.real * c2.real) + (c1.imag * c2.imag)) / (pow(c2.real, 2) + pow(c2.imag, 2));c.imag = ((c1.imag * c2.real) - (c1.real * c2.imag)) / (pow(c2.real, 2) + pow(c2.imag, 2));return c;}void Complex::display(){cout << "(" << real << ", " << imag << "i)" << endl;}Complex Complex::operator + (double d){Complex c;c.real = real + d;c.imag = imag;return c;}Complex Complex::operator - (double d){Complex c;if(real > d){    c.real = real - d; }else{c.real = -(d - real);}c.imag = imag;return c;}Complex Complex::operator * (double d){Complex c;c.real = real * d;c.imag = imag * d;return c;}Complex Complex::operator / (double d){Complex c;c.real = real / d;c.imag = imag / d;return c;}Complex Complex::operator - (){Complex c;c.real = 0 - real;c.imag = 0 - imag;return c;}

实验结果截图：

实验心得：

依然没什么难度的题目，大概因为是第一个任务，老师怕吓到我们，所以给的题目相对简单吧，方案三算是在方案一、二之上的扩充吧，重点还是运载符的重载啦，所以，感觉能做出方案一和二的话，理解上应该就没有什么障碍了，也就能很顺手的编写方案三的代码啦。