每天打卡一小时 第十一天 编译四部曲

 

第一部曲 自然语言

创建函数，对函数进行定义声明

第二部曲 流程图

不用了吧

第三部曲 代码

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#include <iostream>   using namespace std;   class Complex {     public:         Complex(double r=0, double i=0):real(r), imag(i){    }         Complex operator+(Complex& c2) const;//重载双目运算符'+'         Complex operator-=(Complex& c2 ); //重载双目运算符'-='         friend Complex operator-(Complex& c1, Complex& c2);//重载双目运算符'-'         void Display() const;     private:         double real;         double imag; };   Complex Complex::operator+(Complex& c2) const//重载双目运算符'+' {     return Complex(real+c2.real,imag+c2.imag); }   Complex Complex::operator-=(Complex& c2 ) //重载双目运算符'-=' {     return Complex(real-=c2.real,imag-=c2.imag); }   Complex operator-(Complex& c1, Complex& c2) {     Complex c;     c.real = c1.real - c2.real;     c.imag = c1.imag - c2.imag;     return c;     }   void Complex::Display() const {     cout << "(" << real << ", " << imag << ")" << endl; }   int main() {     double r, m;     cin >> r >> m;     Complex c1(r, m);     cin >> r >> m;     Complex c2(r, m);     Complex c3 = c1+c2;     c3.Display();     c3 = c1-c2;     c3.Display();     c3 -= c1;     c3.Display();     return 0; }

　　

第四部曲 总结

常引用