So we're now going to discuss billions and you're probably wondering why I haven't discussed them yet.
Well the reason is is because C doesn't come with billions built in.
In other words it's not a primitive type essentially to access billions and see you need to include
a header file.
So include LCD bool Hage.
This will now allow you to do things like this.
So while this does this creates an ABC variable and the ABC variable is equal to true.
So what we can now do is we can access false and true in C so I can do things like if ABC print f ABC
is true.
If I now compile that ABC is true I can see that if I set this to false I can pull out now I can see
nothing so you can clearly see that by include including SD builder Hage.
It defines a macro a definition called false.
That's equal to zero.
So much like when I showed you how to define things in the pre process a course in the pre process lecture
you can see that false is equal to zero and true has a definition that is equal to one.
So you use bylines in situations where there's only two values 0 or 1 True or false yes or no.