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C++习题 复数类--重载运算符+,-,*,/
Description
定义一个复数类Complex，重载运算符“+”,“-”,“*”,“/”，使之能用于复数的加、减、乘、除。运算符重载函数作为Complex类的成员函数。编写程序，分别求两个复数之和、差、积和商。
Input
两个复数
Output
两个复数之和、差、积和商
Sample Input
3 45 -10
Sample Output
c1+c2=(8.00,-6.00i)c1-c2=(-2.00,14.00i)c1*c2=(55.00,-10.00i)c1/c2=(-0.20,0.40i)/* C++代码 */#include <iostream>#include <iomanip>using namespace std;class Complex{public: Complex(); Complex(double r,double i); Complex operator+(Complex &c2); Complex operator-(Complex &c2); Complex operator*(Complex &c2); Complex operator/(Complex &c2); void display();private: double real; double imag;};Complex ::Complex(){return ;}Complex::Complex(double r,double i){real=r;imag=i;}Complex Complex:: operator+(Complex &c2){return Complex(real+c2.real,imag+c2.imag);} Complex Complex::operator-(Complex &c2){return Complex(real-c2.real,imag-c2.imag);} Complex Complex::operator*(Complex &c2) {return Complex(real*c2.real-imag*c2.imag,real*c2.imag+imag*c2.real);} Complex Complex::operator/(Complex &c2) {double x; x=c2.imag*c2.imag+c2.real*c2.real; return Complex((real*c2.real+imag*c2.imag)/x,(-real*c2.imag+imag*c2.real)/x);} void Complex::display() {cout<<‘(‘<<real<<‘,‘<<imag<<‘i‘<<‘)‘<<endl;}int main(){ double real,imag; cin>>real>>imag; Complex c1(real,imag); cin>>real>>imag; Complex c2(real,imag); cout<<setiosflags(ios::fixed); cout<<setprecision(2); Complex 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;}
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