Which of the following is not a valid conditional inclusions in preprocessor directives?

Options
- #ifdef
- #ifundef
- #endif
- #elif

CORRECT ANSWER : #ifundef

Discussion Board
#ifndef

it should be #ifndef lol

Winston 08-13-2021 05:22 AM

C++ - Preprocessor Directives

#ifundef is not a valid conditional inclusions in preprocessor directives. #ifdef, #endif, #elif these are all preprocessor directives.

Prajakta Pandit 01-25-2017 07:24 AM

Conditional inclusions/ preprocessor

Can someone please explain conditional inclusions in detail.

Aditya 11-19-2013 01:34 AM

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