Design a COMPLEX class, which will behave like normal integer with respect to i) Addition ii) Subtraction iii) Accepting the value iv) Displaying the value

Source Code :

#include<iostream.h>

class complex {

                int img,rl;

                public:

                complex operator+(complex);

                complex operator-(complex);

                void get_value();

                void show_value();

};

void complex::get_value() {

      cout<<endl<<"Enter the value of img : ";

      cin>>img;

      cout<<endl<<"Enter the value of real : ";

      cin>>rl;

}

void complex::show_value() {

      cout<<endl<<"Value of img : "<<img<<endl<<"Value of real : "<<rl<<endl;

}

complex complex::operator+(complex ob) {

      complex ob1;

      ob1.rl=rl+ob.rl;

      ob1.img=img+ob.img;

      return ob1;

}

complex complex::operator-(complex ob) {

      complex ob1;

      ob1.rl=rl-ob.rl;

      ob1.img=img-ob.img;

      return ob1;

}

int main() {

      complex ob1,b2,ob3,ob4;

      int ch;

      while (true) {

            cout<<endl<<"MAIN MENU";

            cout<<endl<<"1. Take Input and Display Output";

            cout<<endl<<"2. Add Two Objects";

            cout<<endl<<"3. Subtract Two Objects";

            cout<<endl<<"4. Exit";

            cout<<endl<<"Enter Choice : ";

            cin>>ch;

            switch(ch) {

                  case 1: {

                        ob1.get_value();

                        ob1.show_value();

                  }break;                            

                  case 2: {

                        ob1.get_value();

                        ob2.get_value();

                        ob3=ob1+ob2;

                        ob3.show_value();

                  }break;

                  case 3: {

                        ob1.get_value();

                        ob2.get_value();

                        ob4=ob1-ob2;

                        ob4.show_value();

                  }break;

                  case 4:

                        exit(0);

                  default: {

                        cout<<endl<<"Invalid choice";

                  }

            }

      }

}

Output :

MAIN MENU

1.  Take Input and Display Output

2.  Add Two Objects

3.  Subtract Two Objects

4.  Exit

Enter Choice : 1

Enter the value of img : -23

Enter the value of real : 45

Value of img : -23

Value of real : 45

MAIN MENU

1.  Take Input and Display Output

2.  Add Two Objects

3.  Subtract Two Objects

4.  Exit

Enter Choice : 2

Enter the value of img : -23

Enter the value of real : 45

Enter the value of img : -12

Enter the value of real : 67

Value of img : -35

Value of real : 112

MAIN MENU

1.  Take Input and Display Output

2.  Add Two Objects

3.  Subtract Two Objects

4.  Exit

Enter Choice : 3

Enter the value of img : -12

Enter the value of real : 43

Enter the value of img : -6

Enter the value of real : 35

Value of img : -6

Value of real : 8