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  1. #include <stdio.h>
  2. #define SIZE 5
  3. int queue[SIZE];
  4. int head,tail;
  5.  
  6. void enqueue(int value);
  7. int dequeue(void);
  8.  
  9. int main(void) 
  10. {
  11. 	head = tail = 0;
  12. 	int i;
  13.  
  14. 	enqueue(1);
  15. 	enqueue(2);
  16. 	dequeue();
  17. 	enqueue(3);
  18. 	dequeue();
  19. 	enqueue(4);
  20. 	enqueue(5);
  21. 	dequeue();
  22. 	enqueue(6);
  23.  
  24. 	for(i=0;i<SIZE;i++){
  25. 		printf("queue[%d]=%d\n",i,queue[i]);
  26. 	}
  27.  
  28.  
  29. 	return 0;
  30. }
  31. void enqueue(int value)
  32. {
  33. 	if( head == (tail+1)%SIZE){
  34. 		printf("キューは満杯で入りません\n");
  35. 	}else{
  36. 		queue[tail++] = value;
  37. 	}
  38. 	tail = tail % SIZE;
  39. }
  40. int dequeue(void)
  41. {
  42. 	int value;
  43. 	if( head == tail){
  44. 		printf("キューは空で取り出せません\n");
  45. 		return 0;
  46. 	}else{
  47. 		value = queue[head];
  48. 		queue[head] = 0;
  49. 	}
  50. 	head = (head + 1) % SIZE;
  51. 	return value;
  52.  
  53. 	}
  54.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
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Standard input is empty
stdout
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queue[0]=6
queue[1]=0
queue[2]=0
queue[3]=4
queue[4]=5
https://ideone.com/7T3GAl
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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