題目描述

定義一個復數類Complex，重載運算符"*","<<",">>"，使之能夠用于復數的乘法、輸入、輸出 main函數中定義復數對象c1,c2,c3,c4，實現 cin>>c1>>c2>>c3; c4=c1*c2*c3; cout<<c4<<endl;

輸入描述

輸入三個復數，必須用cin>>c1>>c2>>c3;

輸出描述

輸出一個復數，必須用cout<<c4<<endl;

輸入樣例

2+3i 4+5i 2+4i

輸出樣例

-102+16i #include <iostream> #include<cstdio>using namespace std;class Complex{private:double real;double imag;public:Complex(double r = 0,double i = 0){//構造函數real=r;imag=i;}~Complex(){}friend Complex operator * (Complex &c1, Complex &c2);friend istream& operator >> (istream&, Complex&);friend ostream& operator << (ostream&, Complex&);friend bool operator == (Complex &c1, Complex &c2);friend bool operator != (Complex &c1, Complex &c2);void display(); };Complex operator * (Complex &c1, Complex &c2){return Complex(c1.real * c2.real - c1.imag * c2.imag, c1.real * c2.imag + c1.imag * c2.real); }istream& operator >> ( istream& in, Complex &c){in >> c.real >> c.imag;return in; } ostream& operator << ( ostream& out, Complex &c){out << c.real << "+" << c.imag << "i\n";return out; }bool operator == (Complex &c1, Complex &c2){if(c1.real == c2.real && c1.imag == c2.imag){return true;} else {return false;} }bool operator != (Complex &c1, Complex &c2){if(c1.real != c2.real || c1.imag != c2.imag){return true;} else {return false;} } void Complex::display( ){cout << real << "+" << imag << "i\n" <<endl; }int main(){Complex c1, c2, c3, c4;cin >> c1;getchar();cin >> c2;getchar();cin >> c3;getchar();c4 = c1 * c2;c4 = c4 * c3;cout << c4;return 0; }

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