Swap Numbers

Question

how to swap two numbers without third variable

Answer 1

Thanks all for that :)

Answer 2

a=a+b
b=a-b
a=a-b

Answer 3

a, b = b, a
// Python

Answer 4

#include <iostream>
using namespace std
void main()
{

    int a,b;

    cout<<"Enter value of a: ";
    cin>>a;
    cout<<"Enter value of b: ";
    cin>>b;
    a=a+b;
    b=a-b;
    a=a-b;
    cout<<"After swap a: "<<a<<"b: "<<b;

 }

suppose
a= 10;

b = 5

a+ b = 15 =a

a-b=5=b

a-b =10 = a

the output is

a= 5
b=10

Hope I answered your question