fork download
copy 
  1. #include <stdio.h>
  2.  
  3. #define SIZE 7
  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. 	enqueue(3);
  17. 	enqueue(4);
  18. 	enqueue(5);
  19. 	enqueue(6);
  20. 	dequeue();
  21. 	dequeue();
  22. 	dequeue();
  23. 	enqueue(7);
  24. 	enqueue(10);
  25.  
  26. 	for (i=0;i<SIZE;i++){
  27. 		printf("queue[%d]=%d\n",i,queue[i]);
  28. 	}
  29. 	return 0;
  30. }
  31.  
  32. void enqueue(int value){
  33. 	if(head==(tail+1)%SIZE){
  34. 		printf("キューは満杯で入りませんでした\n");
  35. 	}else{
  36. 		queue[tail++]=value;
  37. 	}
  38. 	tail=tail%SIZE;
  39. }
  40.  
  41. int dequeue(void){
  42. 	int value;
  43. 	if(head==tail){
  44. 		printf("キューは空で取り出せませんでした\n");
  45. 	}else{
  46. 		queue[head]=0;
  47. 		value=queue[head++]; //headの位置をずらしてvalueに一時的に保存する
  48. 	}
  49. 	head=head%SIZE;
  50. 	return value;
  51. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
queue[0]=10
queue[1]=0
queue[2]=0
queue[3]=4
queue[4]=5
queue[5]=6
queue[6]=7
https://ideone.com/802yxe
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!