fork download
copy 
  1. #include <stdio.h>
  2.  
  3. #define SIZE 5
  4. int queue[SIZE];
  5. int head, tail;
  6.  
  7. void enqueue(int value);
  8. int dequeue(void);
  9.  
  10. int main(void)
  11. {
  12. 	head=tail=0;
  13. 	int i;
  14.  
  15. 	enqueue(1);
  16. 	enqueue(2);
  17. 	dequeue();
  18. 	enqueue(3);
  19. 	dequeue();
  20. 	enqueue(4);
  21. 	enqueue(5);
  22. 	dequeue();
  23. 	enqueue(6);
  24.  
  25. 	for(i=0;i<SIZE;i++){
  26. 		printf("queue[%d]=%d\n",i,queue[i]);
  27. 	}
  28.  
  29. 	return 0;
  30. }
  31.  
  32. void enqueue(int value)
  33. {
  34. 	if(head==(tail+1)%SIZE){
  35. 		printf("キューは満杯で入りませんでした\n");
  36. 	}else{
  37. 		queue[tail]=value;
  38. 		tail++;
  39. 	}
  40. 	tail=tail%SIZE;
  41. }
  42.  
  43. int dequeue(void)
  44. {
  45. 	int value;
  46. 	if(head==tail){
  47. 		printf("キューは空で取り出せませんでした\n");
  48. 		return 0;
  49. 	}else{
  50. 		value=queue[head];
  51. 		queue[head]=0;
  52. 		head++;
  53. 	}
  54. 	head=head%SIZE;
  55. 	return value;
  56. }
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
queue[0]=6
queue[1]=0
queue[2]=0
queue[3]=4
queue[4]=5
https://ideone.com/lld5TH
language:
C99 (gcc 8.3)
created:
11 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!