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This article mainly introduces "what is the meaning of preprocessor in c language". In daily operation, I believe that many people have doubts about the meaning of preprocessor in c language. The editor has consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the question of "what is the meaning of preprocessor in c language?" Next, please follow the editor to study!

1. C language has a preprocessor, which does not exist in Java. It is actually just a text replacement tool.

2. The preprocessor of C, namely CPP, will be processed in the actual compiler, and all preprocessing commands will start at #.

Example

# include # include # include / / use the macro continuation operator # define message_for (Azov b)\ printf (# a "and" # b ": love\ n") / / paste token and n as a tag # define tokenPaster (n) printf ("token" # n "=% d\ n", token##n) / / parameterized macro To define a function # define square (x) ((x) * (x)) int main () {/ / using the string constant operator message_for (Carole,Debra) / / paste int token34 = 40; tokenPaster (34); / / parameterized macro int j = square (5); printf ("j =% d", j); return 0;} at this point, the study of "what is the meaning of preprocessor in c language" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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