Undeclared enum?

Question

While compiling this code:

#include <stdio.h>

enum Boolean
{
    TRUE,
    FALSE
};

int main(int argc, char **argv)
{
    printf("%d", Boolean.TRUE);

    return 0;
}

I'm getting:

error: 'Boolean' undeclared (first use in this function)

What I'm doing wrong?

Answer 1

In C, you don't access individually enumerated constants using the syntax EnumType.SpecificEnum. You just say SpecificEnum. For example:

printf("%d", TRUE);

When you write

printf("%d", Boolean.TRUE);

C thinks that you're trying to go to the struct or union named Boolean and access the TRUE field, hence the compiler error.

Hope this helps!