C++习题 复数类–重载运算符2+
Description
定义一个复数类Complex，重载运算符“+”，使之能用于复数的加法运算。参加运算的两个运算量可以都是类对象，也可以其中有一个是整数，顺序任意。例如，c1+c2,i+c1,c1+i均合法(设i为整数,c1,c2为复数)。编写程序，分别求两个复数之和、整数和复数之和。
Input
两个复数
一个复数和一个整数
一个整数和一个复数
Output
两个复数之和、复数和整数之和，整数和复数之和。
Sample Input
|
1 2 3 |
3 4 5 -10 3 4 5 5 3 4 |
Sample Output
|
1 2 3 |
c1+c2=(8.00,-6.00i) c1+i=(8.00,4.00i) i+c1=(8.00,4.00i) |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 |
#include <iostream> #include <iomanip> using namespace std; class Complex { public: Complex() { real=0; imag=0; } Complex(double r,double i) { real=r; imag=i; } Complex operator+(Complex &c2); Complex operator+(int &i); friend Complex operator+(int&,Complex &); void display(); private: double real; double imag; }; Complex Complex:: operator+(Complex &c2) {return Complex(real+c2.real,imag+c2.imag);} Complex Complex:: operator+(int &i) {return Complex(real+i,imag);} Complex operator+(int&i,Complex &c) {return Complex(i+c.real,c.imag);} 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(); int i; cin>>real>>imag; cin>>i; c3=Complex(real,imag)+i; cout<<"c1+i="; c3.display(); cin>>i; cin>>real>>imag; c1=Complex(real,imag); c3=i+c1; cout<<"i+c1="; c3.display(); return 0; } |
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