#define in C

Question

https://www.sololearn.com/post/348153/?ref=app
Is the correct answer #define ?
Because
# include directivetell the preprocessor to start searching for the file listed
#define directive directs the preprocessor to replace all subsequent occurrences
which directive works both search and replace?

Answer 1

Yes,
#define is the correct answer.

#include:
Preprocessor searches for the file in some directories and the contnent of a specified file is inserted into source file instead of #include directive.

#define:
Preprocessor searches and replaces all subsequent occurences of specified macro (till end of file or #undef directive)

Answer 2

Thanks 👍👍