Why... Why... Pls Tell me Why...

Question

int main()
{
    int a = 1;
    int b = 1;
    int c = 1;
    int d = 1;
    
    a = a++ + a++;
    b = b++ + ++b;
    c = ++c + c++;
    d = ++d + ++d;
    
    printf("Result is: a=%d, b=%d, c=%d, d=%d", a, b, c, d);

    return 0;
}

Result is: a=3, b=4, c=5, d=6  

Answer 1

Firstly, I recommend not to invest your time on pre and post increment operators, trust me if you do this in a real time project, code reviewers will definitely come back hard at you. If you think you might get this question in an interview, you can simply say I don't know and most probably interviewer will give a wrong answer too(happened to me)

Coming to the answer,

Check this link: https://gynvael.coldwind.pl/?id=372