fork download
copy 
  1. #include<stdio.h>
  2. #define SIZE 5
  3. int queue[SIZE];
  4. int head, tail;
  5.  
  6. void enqueue(int value);
  7. int dequeue(void);
  8.  
  9. int main(void)
  10. {
  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.  
  25.     for (i = 0; i < SIZE; i++) {
  26.         printf("queue[%d]=%d\n", i, queue[i]);
  27.  
  28.     }
  29.  
  30.     return 0;
  31. }
  32.  
  33. void enqueue(int value)
  34. {
  35.  
  36.     if ((tail + 1) % SIZE == head) {
  37.         printf("満杯の状態\n");
  38.         return;
  39.     }
  40.     else{
  41.         queue[tail]=value;
  42.     }
  43.     tail=(tail+1)%SIZE;
  44.  
  45. }
  46.  
  47. int dequeue(void)
  48. {
  49.     int value;
  50.  
  51.     if(head==tail){
  52.         printf("空の状態\n");
  53.         return 0; 
  54.     }
  55.     else{
  56.         value=queue[head]; 
  57.         queue[head]=0;
  58.         queue[head++];
  59.  
  60.     }
  61.     head=head%SIZE;
  62.     return value;
  63. }
  64.  
  65.  
Success #stdin #stdout 0.01s 5288KB
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/4OsmZh
language:
C (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!