Explain this Please. Why answer is 1211? (C++)

Question

#include <iostream>
using namespace std;

int main()
{
int x=1,y=1,z=1;
cout <<(++x||++y&&++z);
cout <<x<<y<<z;
}

answer: 1211

Answer 1

because of the || or. It is finding no reason not to perform your first operation. change || to && also and watch then. Remember it won't make a choice just because you said ||. it will still use the first valid operation it will not randomly decide to evaluate ++y and skip ++× on its own.

Answer 2

Just trying around.
https://code.sololearn.com/cDSmQnVFwU93/?ref=app

Answer 3

Thanks for answer.
Question is why y and z is not increesing?
Why answer is not 1222?