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  1. /* create a complex class with private members for the real and imaginary parts
  2. overload the +,-,and * operators to perform addition ,subtraction and multiplication
  3. of complex numbers. test the overloaded operators by creating two complex objects and
  4. performing arithmetic operations on them*/
  5. #include <iostream>
  6. using namespace std;
  7.  
  8. class Complex {
  9. private:
  10.     float real;
  11.     float imag;
  12.  
  13. public:
  14.     // Constructor
  15.     Complex(float r = 0, float i = 0) {
  16.         real = r;
  17.         imag = i;
  18.     }
  19.  
  20.     // Input method
  21.     void input() {
  22.         cout << "Enter real part: ";
  23.         cin >> real;
  24.         cout << "Enter imaginary part: ";
  25.         cin >> imag;
  26.     }
  27.  
  28.     // Overload +
  29.     Complex operator + (const Complex& c) const {
  30.         return Complex(real + c.real, imag + c.imag);
  31.     }
  32.  
  33.     // Overload -
  34.     Complex operator - (const Complex& c) const {
  35.         return Complex(real - c.real, imag - c.imag);
  36.     }
  37.  
  38.     // Overload *
  39.     Complex operator * (const Complex& c) const {
  40.         float r = (real * c.real) - (imag * c.imag);
  41.         float i = (real * c.imag) + (imag * c.real);
  42.         return Complex(r, i);
  43.     }
  44.  
  45.     // Display method
  46.     void display() const {
  47.         cout << real;
  48.         if (imag >= 0)
  49.             cout << " + " << imag << "i" << endl;
  50.         else
  51.             cout << " - " << -imag << "i" << endl;
  52.     }
  53. };
  54.  
  55. int main() {
  56.     Complex c1, c2;
  57.  
  58.     cout << "Enter first complex number:\n";
  59.     c1.input();
  60.  
  61.     cout << "\nEnter second complex number:\n";
  62.     c2.input();
  63.  
  64.     Complex sum = c1 + c2;
  65.     Complex diff = c1 - c2;
  66.     Complex prod = c1 * c2;
  67.  
  68.     cout << "\nFirst Complex Number: ";
  69.     c1.display();
  70.  
  71.     cout << "Second Complex Number: ";
  72.     c2.display();
  73.  
  74.     cout << "\nSum: ";
  75.     sum.display();
  76.  
  77.     cout << "Difference: ";
  78.     diff.display();
  79.  
  80.     cout << "Product: ";
  81.     prod.display();
  82.  
  83.     return 0;
  84. }
  85.  
  86.  
  87.  
Success #stdin #stdout 0.01s 5300KB
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stdin
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Standard input is empty
stdout
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Enter first complex number:
Enter real part: Enter imaginary part: 
Enter second complex number:
Enter real part: Enter imaginary part: 
First Complex Number: 0 + 0i
Second Complex Number: 0 + 0i

Sum: 0 + 0i
Difference: 0 + 0i
Product: 0 + 0i
https://ideone.com/SUp1gc
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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