Is there is any way to reverse the value of x,y variables with out using new z variable ???

Question

C++
https://code.sololearn.com/c52UV7eX5VS9/?ref=app

Answer 1

x ^= y;
y ^= x;
x ^= y;

or

x += y
y = x - y
x -= y

Answer 2

thank's alot 😎😎

Answer 3

Yes, but it still requires storing x in a temporary.
#include<iostream>
using namespace std;
int x=10,y=20;
void swap(int z) {
x=y;
y=z;
}
int main(){
swap(x);
cout<<"x="<<x<<endl<<"y="<<y;
return 0;
}