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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. 	enqueue(1);
  13. 	enqueue(2);
  14. 	dequeue();
  15. 	enqueue(3);
  16. 	dequeue();
  17. 	enqueue(4);
  18. 	enqueue(5);
  19. 	dequeue();
  20. 	enqueue(6);
  21. 	for(i=0;i<SIZE;i++){
  22. 		printf("queue[%d]=%d\n",i,queue[i]);
  23. 	}
  24. 	return 0;
  25. }
  26.  
  27. void enqueue(int value){
  28. 	if(head==(tail+1)%SIZE){
  29. 		printf("キューは満杯で入りませんでした\n");
  30. 	}else{
  31. 		queue[tail++]=value;
  32. 	}
  33. 	tail=tail%SIZE;
  34. }
  35. int dequeue(void){
  36. 	int value;
  37. 	if(head==tail){
  38. 		printf("キューは空で取り出せませんでした\n");
  39. 		return 0;
  40. 	}else{
  41. 		value=queue[head];
  42. 		queue[head]=0;
  43. 		head++;
  44. 	}
  45. 	head=head%SIZE;
  46. 	return value;
  47. }
Success #stdin #stdout 0.01s 5320KB
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/IqTwRa
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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