What is happening in an “If(..||..)” and “If(…&&…)” construct internally?

Question

I was just wondering what happens inside of an \"if OR\" and \"if AND\". I have a feeling that it\'s just syntactic sugar to use &

Answer 1

The code:

if(a)
    if(b)
        if(c)
            DoSomething();

is a logical (but not "practical") equivalent for:

if(a && b && c)
    DoSomething();

As for the OR operator you've got it a bit wrong. A logical (but, again, not "practical") equivalent for:

if(a || b || c)
    DoSomething();

would be:

if(a)
    DoSomething();
else if(b)
    DoSomething();
else if(c)
    DoSomething();

By practical difference I understand any resulting code differences introduced by the compiler (refer to other answers for details).