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Write C++ code to swap two numbers using different methods

// Write C++ code to swap two numbers using different methods

#include <bits/stdc++.h>
using namespace std ;

int main()
{
     int a = 45 , b = 54, temp;
     cout << "Method - 1: \n";
     cout << "Before swapping " << a <<" and "<< b <<endl ;
     // METHOD - 1
     temp = a;
     a = b;
     b = temp;
     cout << "After swapping  " << a <<" and "<< b  <<endl ;


     // METHOD - 2
     a = 44;
     b = 55;
     cout << "\nMethod - 2: \n";
     cout << "Before swapping " << a <<" and "<< b <<endl ;
     a = a + b;
     b = a - b;
     a = a - b;
     cout << "After swapping  " << a <<" and "<< b  <<endl ;

    return 0 ;
}

Output:

Method - 1:
Before swapping 45 and 54
After swapping  54 and 45

Method - 2:
Before swapping 44 and 55
After swapping  55 and 44