12. Write a C++ program using class to overload the operator unary increment ++ for an integer number.


#include<iostream.h>
#include<conio.h>
class unary
{
int num;
public:
unary(int n)
{
num=n;
}
void operator++(int)
{
num++;
cout<<“The increment of number: “<<num;
}
};
void main()
{
int n;
clrscr();
cout<<“Enter the number: \n”;
cin>>n;
unary u(n);
u++;
getch();
}

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