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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 date,i;
  12.  
  13. 	enqueue(1);
  14. 	enqueue(2);
  15. 	dequeue();
  16. 	enqueue(3);
  17. 	dequeue();
  18. 	enqueue(4);
  19. 	enqueue(5);
  20. 	dequeue();
  21.  
  22. 	for(i=0;i<SIZE;i++){
  23. 		printf("queue[%d]=%d\n",i,queue[i]);
  24. 	}
  25. 	return 0;
  26. }
  27.  
  28. void enqueue(int value){
  29. 	if(head==(tail+1)%SIZE){
  30. 		printf("キューは満杯ではいりませんでした\n");
  31. 	}
  32. 	else{
  33. 		queue[tail]=value;
  34. 		tail=tail+1;
  35. 	}
  36. 	tail=tail%SIZE;
  37. }
  38.  
  39. int dequeue(void){
  40. 	int value;
  41. 	if(head==tail){
  42. 		printf("キューは空で取り出せませんでした\n");
  43. 		return 0;
  44. 	}
  45. 	else{
  46. 		value=queue[head];
  47. 		queue[head]=0;
  48. 		head=head+1;
  49. 	}
  50. 	head=head%SIZE;
  51. 	return value;
  52. }
  53.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
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Standard input is empty
stdout
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queue[0]=0
queue[1]=0
queue[2]=0
queue[3]=4
queue[4]=5
https://ideone.com/RCDP0v
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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