fork download
copy 
  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.  
  28. 	return 0; 
  29. } 
  30.  
  31. void enqueue(int value) {
  32. 	if (head == (tail + 1) % SIZE) { 
  33. 		printf("キューは満杯で入りませんでした\n"); 
  34. 	} else { 
  35. 		queue[tail++] = value; 
  36. 		tail = tail % SIZE; 
  37. 	} 
  38. }
  39.  
  40. int dequeue(void) { 
  41. 	int value;
  42. 	if (head == tail) { 
  43. 		printf("キューは空で取り出せませんでした\n"); 
  44. 		return 0; 
  45. 	} else { 
  46. 		value = queue[head]; 
  47. 		queue[head] = 0; 
  48. 		head = (head + 1) % SIZE;
  49. 	}
  50. 		return value; 
  51. }
Success #stdin #stdout 0s 5260KB
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/Qrv9ZV
language:
C (gcc 8.3)
created:
56 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!