In C, what is the purpose of the #ifdef directive?
A. Checks if a macro is defined
B. Checks if a macro is not defined
C. Defines a macro
D. Includes a header file
Answer: Option A
This Question Belongs to C Program >> C Preprocessor
Related Questions on C Preprocessor
What is the purpose of the C preprocessor in C programming?
A. Compile C code
B. Optimize code
C. Preprocess code before compilation
D. Execute code
A. #define
B. #include
C. #ifdef
D. #pragma
What is the purpose of the #define directive in C preprocessing?
A. To include a header file
B. To define a macro
C. To declare a constant
D. To declare a variable
In C, which directive is used to conditionally include code based on preprocessor macros?
A. #ifdef
B. #ifndef
C. #if
D. #else
Join The Discussion