Preprocessing : Preprocessor « Preprocessor « C Tutorial

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C Tutorial » Preprocessor » Preprocessor 
12.1.1.Preprocessing

You can use preprocessor to define constant and substitution.

#include <stdio.h>

#define const 5

main(){
  int i= 4;

  i = i * const;

  printf("%d \n", i);

}
 
20
12.1.Preprocessor
12.1.1.Preprocessing
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