CODEWITHSUNDEEP
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Reputation: 1513

Using an enum as a parameter and a return type in a function in C

If I decided to use an enum, such as this one:

typedef enum {
    FALSE, TRUE = !FALSE
} bool;

as a parameter, and a return type in this function:

bool foo(bool param)
{
    <do something>
    return TRUE;
}

Would it cause any problems? for example, across compilers.

PS: I don't intend to use #include <stdbool.h>

Upvotes: 2

Views: 175

Answers (2)

0___________
0___________

Reputation: 67546

As I understand this is only an example and your actual type names will not collide with something "standard'. Using enum types as parameters and return values is 100% OK and safe.

Upvotes: 1

gsamaras
gsamaras

Reputation: 73366

Since you don't intend to #include <stdbool.h> (which might cause conflicts), there should not be a problem with your approach.

However, if this is a big project, where others contribute too, then I wouldn't recommend you to go on with your approach, because they might include that header. Moreover, if you decide to use that code in a future project of yours, I am pretty sure that would not remember that detail with this prevention of including that header, except if you document it nicely.

Upvotes: 3

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