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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. 	head=tail=0;
  11. 	int data,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\n",i,queue[i]);
  25. 	}
  26. 	return 0;
  27. }
  28.  
  29. void enqueue(int value)
  30. {
  31. 	if(head==(tail+1)%SIZE){
  32. 		printf("キューは満杯で入りませんでした\n");
  33. 	}
  34. 	else{
  35. 		queue[tail++]=value;
  36. 	}
  37. 	tail=tail%SIZE;
  38. }
  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でした\n");
  45. 		return 0;
  46. 	}
  47. 	else{
  48. 		value=queue[head++];
  49. 	}
  50. 	head=head%SIZE;
  51. 	queue[head-1]=0;
  52. 	return value;
  53. }
  54.  
  55.  
  56.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
Standard input is empty
stdout 
queue[0]=6
queue[1]=0
queue[2]=0
queue[3]=4
queue[4]=5
https://ideone.com/slVDii
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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