Syntax question

[tonyg362]

I saw a class defined using the syntax below, can somebody explain the syntax which is bolded?

class myClass{
private:
bool var : 1;
public:
myClass();
//etc...
}

[j3bk4iN6]

http://www.cplusplus.com/forum/beginner/4268/

this might help

[tonyg362]

Doesn't really help. I mean forget the type. Say it was int var : 1?

[DrChill]

So when you do something like:

int var:1
//or
bool var2:1

You have it allow the variable access to a number of bits

In your case it is 1, because in reality true and false only needs one bit, 1 or 0. Get it?

[firedraco]

A bit. But IIRC you can only do it in classes.

[DrChill]

Woops edited before I saw your post, had to go grab a book.

[tonyg362]

Ah, yes that is the syntax for bit fields. Thanks.