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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4.  
  5. 	/* constants */
  6. 	#define ON 1
  7. 	#define OFF 0
  8.  
  9. 	int light_switch = ON;  /* simulates a light switch */
  10.  
  11. 	/* Check to see if the lights are on */
  12. 	if (light_switch)
  13. 	    printf ("The Lights are ON\n");
  14.  
  15. 	switch (light_switch)
  16.     {
  17.         case ON:
  18.             printf("The Lights are ON\n");
  19.             break;
  20.         case OFF:
  21.             printf("The Lights are OFF\n");
  22.             break;
  23.  
  24.     } /* switch */
  25.  
  26. 	return 0;
  27. }
  28.  
Success #stdin #stdout 0s 5316KB
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stdin
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OFF
stdout
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The Lights are ON
The Lights are ON
https://ideone.com/DE5O6O
language:
C (gcc 8.3)
created:
15 hours ago
visibility:
public

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