bool vs BOOL

[some random dude]

I was wondering what the difference is between BOOL and bool, and TRUE and true, and FALSE and false, ect. ect.

[hefan2011]

it's convenience to change BOOL to other type like "typedef BOOL DOUBLE".
but if you use 'bool',you should had to repleace everywhere 'bool' used

[3pj6b7Xj]

bool is a C++ keyword BOOL is not, true & false are C++ keyword TRUE & FALSE are not. bool stands for boolean, a condition that is either true or false, a 0 or a 1.

bool bQuit = false;
int count = 0;

while (!bQuit)
{
     count++;

     if (count == 10) bQuit = true;
}

However, if you would have written the same code and replaced false with FALSE and true with TRUE, in some implementations they work the same way, why? Because...

#define TRUE        1
#define FALSE       0 

Not sure if this is what you wanted to know...

[some random dude]

I understand that bool is a C++ keyword, and how to use it, I just want to know how BOOL is different from bool.

[3pj6b7Xj]

They are the same thing except bool is for C++. BOOL is used in C...

typedef int BOOL;


In C it is a defined type of type int ...... you can store 0 or 1 or anything.....

BOOL junk; // can store a -1, true, false or 0 what ever it may be even 236 if you wanted too...

bool junk; // cannot store -1 will probably crash your program or do nothing, can only store 0 or 1.

If you are only concerned with true or false, use bool if you want to store a condition other than true or false.....not recommended but you might want to use BOOL but thats up to you...

typedef int BOOL;

can be the same was

int BOOL;

I'm speculating too much now...i'll let someone else pitch in...

[some random dude]

Oh, bool = C++, BOOL = C. I got it now, thanks, this was confusing me lol.