4

Enumerations

  1. #include <stdio.h>
  2.  
  3. main() {
  4.     enum boolean {false, true} yes = true, no = false;
  5.  
  6.     const int FALSE = 0, TRUE = !FALSE;
  7.  
  8.     printf("false=%d\n", false);
  9.     printf("true=%d\n", true);
  10.  
  11.     printf("yes=%d\n", yes);
  12.     printf("no=%d\n", no);
  13.  
  14.     printf( yes == no ? "What?\n" : "Ok\n" );
  15.  
  16.     printf("\n");
  17.     printf("FALSE=%d\n", FALSE);
  18.     printf("TRUE=%d\n", TRUE);
  19. }
$ gcc -o enum enum.c
$ ./enum
false=0
true=1
yes=1
no=0
Ok

FALSE=0
TRUE=1

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