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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("キューは満杯で入りませんでした\n");
  36. }else{
  37. 	queue[tail++]=value;
  38. }
  39. tail=tail%SIZE;
  40. }
  41.  
  42. int dequeue(void)
  43. {
  44. int value;
  45. 	if(head==tail){ 
  46.         printf("キューは空で取り出せませんでした\n");
  47.         return 0;
  48.     }else{
  49.         value=queue[head++];
  50.     }head=head%SIZE;
  51.     return value;
  52. }
  53.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
queue[0]=6
queue[1]=2
queue[2]=3
queue[3]=4
queue[4]=5
https://ideone.com/9gSR1L
language:
C (gcc 8.3)
created:
16 days ago
visibility:
public

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