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  1. #include <stdio.h>
  2.  
  3. #define SIZE 5
  4. int queue[SIZE];
  5. int head, tail;
  6. void enqueue(int value);
  7. int dequeue(void);
  8.  
  9. int main(void){
  10. 	head = tail = 0;
  11. 	int i;
  12.  
  13. 	enqueue(1);
  14. 	enqueue(2);
  15. 	dequeue();
  16. 	enqueue(3);
  17. 	dequeue();
  18. 	enqueue(4);
  19. 	enqueue(5);
  20. 	dequeue();
  21. 	enqueue(6);
  22.  
  23. 	for (i=0;i<SIZE;i++){
  24. 		printf("queue[%d]=%d", i, queue[i]);
  25. 	}
  26. 	return 0;}
  27.  
  28. void enqueue (int value){
  29. 	if(((tail+1)%SIZE)==head){
  30. 		printf("キューは満杯で入りませんでした");
  31. 	}
  32. 	else{queue[tail]=value;
  33. 		tail=(tail+1)%SIZE;
  34. 	}
  35. }
  36.  
  37. int dequeue(void)
  38. {
  39. 	int value;
  40. 	if (head == tail){
  41. 		printf("キューは空で取り出せませんでした");
  42. 		return 0;
  43. 	}
  44. 	else {
  45. 		value = queue[head];
  46. 		queue[head]=0;
  47. 		head = (head+1)%SIZE;
  48. 		printf("取り出した値;%d", value);
  49. 	}
  50.  
  51. 	return value;
  52. }
Success #stdin #stdout 0s 5320KB
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取り出した値;1取り出した値;2取り出した値;3queue[0]=6queue[1]=0queue[2]=0queue[3]=4queue[4]=5
https://ideone.com/BXMDV0
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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