Write a C++ program to overload unary operator as member function.

AIM: Write a C++ program to overload unary operator as member function.

THEORY:

. The unary operators operate on a single operand and following are the examples of Unary operators −

• The increment (++) and decrement (--) operators.
• The unary minus (-) operator.
• The logical not (!) operator.

The unary operators operate on the object for which they were called and normally, this operator appears on the left side of the object, as in !obj, -obj, and ++obj but sometime they can be used as postfix as well like obj++ or obj--.

SOURCE CODE:

#include<iostream>

using namespace std;

class num                           

{

            private:

            int a,b,c;

            public:

            num(int j,int k,int m)

            {

                        a=j;b=k;c=m;

             }

                        void show(void);

                        void operator ++( );    

};

void num::show()

{

            cout<<"\n a= "<<a<<"\n b= "<<b<<"\n c= "<<c;

}

void num::operator ++( )

{

            ++a;

            ++b;

            ++c;

}

int main(){

            num n(3,2,5);

            n.show();

            ++n;

            n.show();

}