1219110042 Operator Overloading Swap without third variable - cpp program

Write a program to swap value of two variables without using third variable

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sample program:

#include <iostream>
using namespace std;
int main()
{
  int a,b;
  cin>>a>>b;
  a=a+b;
  b=a-b;
  a=a-b;
  cout<<a<<" "<<b;
	return 0;
} 

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