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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. {
  12.     head = tail = 0; 
  13.     int data, 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("入りません");
  36. }
  37. else{
  38. 	queue[tail++]=value;
  39. }
  40. tail=tail%SIZE;
  41.  
  42.  
  43. }
  44.  
  45. int dequeue(void)
  46. {
  47. int value;
  48. if(head==tail){
  49. 	printf("空です");
  50. 	return 0;
  51. }
  52. else{
  53. 	value=queue[head];
  54. 	queue[head]=0;
  55. 	head++;
  56. }
  57.  
  58. head=head%SIZE;
  59.  
  60. return value;
  61.  
  62. }
  63.  
Success #stdin #stdout 0.01s 5320KB
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/OeSEDM
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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