Use #define to define constant : define « Preprocessor « C Tutorial

1. C Tutorial
2. Preprocessor
3. define

#include <stdio.h>

#define TRUE           1
#define FALSE          0
#define BS             '\b'
#define TAB            '\011'

main(){

   printf("%d",TRUE);
   printf("%d",FALSE);
   printf("%c",BS);
   printf("%d",TAB);
}

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