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  1. #include <stdio.h>
  2. #define SIZE 5
  3. int queue[SIZE];
  4. int head,tail;
  5. void enqueue(int value);
  6. int dequeue(void);
  7.  
  8. int main(void) {
  9. 	head = tail =0;
  10. 	int data,i;
  11. 	enqueue(1);
  12. 	enqueue(2);
  13. 	dequeue();
  14. 	enqueue(3);
  15. 	dequeue();
  16. 	enqueue(4);
  17. 	enqueue(5);
  18. 	dequeue();
  19. 	enqueue(6);
  20.  
  21. 	for(i=0;i<SIZE;i++){
  22. 		printf("queue[%d]=%d\n",i,queue[i]);
  23. 	}
  24. 	return 0;
  25. }
  26. void enqueue(int value){
  27. 	if(head == (tail+1)%SIZE){
  28. 		printf("満杯の状態です。");
  29. 	}
  30. 	else{
  31. 		queue[tail++]=value;
  32. 	}
  33. 	tail = tail%SIZE;
  34. }
  35.  
  36. int dequeue(void){
  37. 	int value;
  38. 	if(head==tail){
  39. 		printf("キューの中は空");
  40. 	}
  41. 	else{
  42. 		queue[head]=0;
  43. 		value = queue[head++];
  44.  
  45. 	}
  46. 	head = head%SIZE;
  47. 	return value;
  48. }
  49.  
  50.  
  51.  
  52.  
Success #stdin #stdout 0s 5320KB
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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/iyp6SD
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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