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  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. 	head=tail=0;
  12. 	int data,i;
  13.  
  14. 	enqueue(1);
  15. 	enqueue(2);
  16. 	dequeue();
  17. 	enqueue(3);
  18. 	dequeue();
  19. 	enqueue(4);
  20. 	enqueue(5);
  21. 	dequeue();
  22. 	enqueue(6);
  23.  
  24. 	for(i=0;i<SIZE;i++){
  25. 		printf("queue[%d]=%d\n",i,queue[i]);
  26. 	}
  27. 	return 0;
  28. }
  29.  
  30. void enqueue(int value)
  31. {
  32. 	if((tail+1)%SIZE==head){
  33. 		printf("満杯です\n");
  34. 		return;
  35. 	}
  36. 	queue[tail]=value;
  37. 	tail=(tail+1)%SIZE;
  38.  
  39. 	}
  40.  
  41. int dequeue(void)
  42. {
  43. int value;
  44. 	if(head==tail){
  45. 		printf("空です\n");
  46. 		return -1;
  47. 	}
  48. 	value=queue[head];
  49. 	queue[head]=0;
  50. 	head=(head+1)%SIZE;
  51. 	return value;	   
  52. 	}
Success #stdin #stdout 0s 5292KB
comments (?)
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/kMTYTL
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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