Simple Program for Unary Operator Overloading Using C++ Programming

Definition

To write a program to find the complex numbers using unary operator overloading.

Unary operators:

• Increment (++) Unary operator.
• Decrement (--) Unary operator.
• The minus (-) unary.
• The logical not (!) operator.

Unary Operator Overloading Algorithm/Steps:

• Step 1: Start the program.
• Step 2: Declare the class.
• Step 3: Declare the variables and its member function.
• Step 4: Using the function getvalue() to get the two numbers.
• Step 5: Define the function operator ++ to increment the values
• Step 6: Define the function operator - -to decrement the values.
• Step 7: Define the display function.
• Step 8: Declare the class object.
• Step 9: Call the function getvalue()
• Step 10: Call the function operator ++() by incrementing the class object and call the function display.
• Step 11: Call the function operator - -() by decrementing the class object and call the function display.
• Step 12: Stop the program.     

Simple Program for Unary Operator Overloading Program

#include<iostream.h>
#include<conio.h>

class complex {
    int a, b, c;
public:

    complex() {
    }

    void getvalue() {
        cout << "Enter the Two Numbers:";
        cin >> a>>b;
    }

    void operator++() {
        a = ++a;
        b = ++b;
    }

    void operator--() {
        a = --a;
        b = --b;
    }

    void display() {
        cout << a << "+\t" << b << "i" << endl;
    }
};

void main() {
    clrscr();
    complex obj;
    obj.getvalue();
    obj++;
    cout << "Increment Complex Number\n";
    obj.display();
    obj--;
    cout << "Decrement Complex Number\n";
    obj.display();
    getch();
}

Sample Output

Enter the two numbers: 3 6              
Increment Complex Number
4 +               7i
Decrement Complex Number
3 +               6i