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  1. #include <stdio.h>
  2.  
  3. #define SIZE 5
  4. int queue[SIZE];
  5. int head,tail;
  6.  
  7. void enqueu(int value);
  8. int dequeu(void);
  9.  
  10. int main(void) {
  11.  
  12. 	head=tail=0;
  13. 	int i;
  14. 	enqueu(1);
  15. 	enqueu(2);
  16. 	dequeu();
  17. 	enqueu(3);
  18. 	dequeu();
  19. 	enqueu(4);
  20. 	enqueu(5);
  21. 	dequeu();
  22. 	enqueu(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 enqueu(int value){
  32.  
  33. 	if(tail+1==head) printf("満タン");
  34. 	else{
  35. 		queue[tail]=value;
  36. 		tail++;
  37. 		tail=tail%SIZE;
  38. 	}
  39. }
  40. int dequeu(void){
  41. 	int value;
  42. 	if(tail==head) {
  43. 		printf("空");
  44. 		return 0;}
  45. 	else{
  46. 		value=queue[head];
  47. 		queue[head]=0;
  48. 		head++;
  49. 		head=head%SIZE;
  50. 		return value;
  51. 	}
  52. }
Success #stdin #stdout 0s 5276KB
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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/Oadw6c
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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