The C ++ complex class is overloaded with Division operators and operators.

The C ++ complex class is overloaded with Division operators and operators.
C8-1 plural addition, subtraction, multiplication, division (100.0/100.0 points)Description

Calculate the addition, subtraction, multiplication, and division of two plural numbers.

 

Input description

The number of two double types in the first row, indicating the real part of the first complex.

The number of two double types in the second row, indicating the real part of the second plural.

Output description

The output calculates the addition, subtraction, multiplication, division, and result of one row.

The output complex number first outputs the real part, space, and then virtual part,

Sample Input

1 13 -1

Sample output

4 0-2 24 20.2 0.4

1 # include <cstdio> 2 # include <cstring> 3 # include <iostream> 4 # include <algorithm> 5 6 using namespace std; 7 8 class Complex {9 public: 10 Complex (double r = 0.0, double I = 0.0): real (r), imag (I) {}; 11 Complex operator + (const Complex & c2) const; 12 Complex operator-(const Complex & c2) const; 13 14/* implement the following three functions */15 Complex operator * (const Complex & c2) const; 16 Complex operator/(const Complex & c2) const; 17 friend ostream & operator <(ostream & out, const Complex & c); 18 19 private: 20 double real; 21 double imag; 22}; 23 24 Complex: operator + (const Complex & c2) const {25 return Complex (real + c2.real, imag + c2.imag ); 26} 27 28 Complex: operator-(const Complex & c2) const {29 return Complex (real-c2.real, imag-c2.imag); 30} 31 32 Complex :: operator * (const Complex & c2) const33 {34 return Complex (real * c2.real-imag * c2.imag, real * c2.imag + imag * c2.real); 35} 36 37 Complex :: operator/(const Complex & c2) const38 {39 if (c2.imag = 0) 40 return Complex (real/c2.real, imag/c2.real); 41 else42 return (* this) * Complex (c2.real,-c2.imag)/Complex (c2.real * c2.real + c2.imag * c2.imag, 0); 43} 44 45 ostream & operator <(ostream & out, const Complex & c) 46 {47 out <c. real <"" <c. imag <endl; 48 return out; 49} 50 51 int main () {52 double real, imag; 53 cin> real> imag; 54 Complex c1 (real, imag); 55 cin> real> imag; 56 Complex c2 (real, imag); 57 cout <c1 + c2; 58 cout <c1-c2; 59 cout <c1 * c2; 60 cout <c1/c2; 61}

It is the overload of operators in C ++.

Note the following two points:

1. In the <overload, pay attention to the returned out, so that the cascade output of <can be achieved (multiple parallel operations );

2. During/overloading, pay attention to return (* this) * Complex (c2.real,-c2.imag)/Complex (c2.real * c2.real + c2.imag * c2.imag, 0 ); this statement will continue to call the overload function itself! It is an overload of/, and you have used/here, so it will recursion! Therefore, return Complex (real/c2.real, imag/c2.real) must be added to ensure that recursion is attributed to the ordinary situation (actually only one layer is recursive ).