C++ | Introduction to operator overloading

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Introduction

This is a tutorial for operator overloading in c++. The program is given below that uses operator overloading to add two numbers. The program is extendable. Go enjoy the program. Lets begin……

Program for operator overloading


#include<iostream.h>
#include<conio.h>
//declare class
class sum
{
public:
int x;
void getx(void)
{
cout<<"Enter number."<<endl;
cin>>x;
}
sum operator + (sum t)
{
sum tmp;
tmp.x= x+ t.x;
return tmp;
}
};
//void main
void main()
{
//clear the screen.
clrscr();
//declare sum
sum a,b,c;
//Call funtions
a.getx();
b.getx();
c=a+b;
cout<<"Sum = "<<c.x;
//get character
getch();
}

Output

Enter number.
4
Enter number.
5
Sum = 9

How it works

  1. You enter two numbers.
  2. Sum is calculated and printed.

Extending it

The program can be extended by using the concept in any program.

  • Remember this is a basic part of c++ which can be used in any program….

Explanation.

  1. Include ‘iostream.h’ and ‘conio.h’.
  2. Add a class with operator overloading function.
  3. Add void main.
  4. Start program by first clearing the screen.
  5. Delcare class.
  6. Call functions
  7. Print the value.

At the end

You learnt creating the C++ program for operator overloading in c++. So now enjoy the program.

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