Can someone explain its output to me? Output: 1211

Question

#include <iostream>
using namespace std;

int main() {
int x=1, y=1, z=1;
cout<<(++x||++y&&++z);
cout<<x<<y<<z;
return 0;
}
https://code.sololearn.com/cPcTxLyQDF8O/?ref=app

Answer 1

First cout is true, so it prints a '1'.
To calculate the result of the first cout it only has to execute ++x. So x is now 2. Because ++y and ++z are never executed they remain 1.

If you replace the || in the first cout by a &&, you get a different result.

Answer 2

Okay, I got it. Thank u for the answer