fork download
copy 
  1. #include<stdio.h>
  2. #define SIZE 5
  3. int queue[SIZE];
  4. int head, tail;
  5. void enqueue(int value);
  6. int dequeue(void);
  7. int main(void)
  8. {
  9.     head = tail = 0;
  10.     int i;
  11.     enqueue(1);
  12.     enqueue(2);
  13.     dequeue();
  14.     enqueue(3);
  15.     dequeue();
  16.     enqueue(4);
  17.     enqueue(5);
  18.     dequeue();
  19.  enqueue(6);
  20.     for(i=0; i<SIZE; i++){
  21.       printf("queue[%d]=%d\n", i, queue[i] );
  22.     }
  23.     return 0;
  24. }
  25. void enqueue(int value){	
  26. 	if(head==(tail+1)){
  27. 		printf("入れません\n");
  28. 	}else {
  29. 		queue[tail++] =value;
  30. 	}
  31. 	tail = tail % SIZE;
  32.  
  33. }
  34. int dequeue(void){	
  35. 	int value;
  36. 	if(head == tail){
  37. 		printf("空で取れない。\n");
  38. 		return 0;
  39. 	}else{
  40. 		value= queue[head];
  41. 		queue[head++]=0;
  42. 	}
  43. 	head = head%SIZE;
  44. 	return value;
  45. }
Success #stdin #stdout 0.01s 5268KB
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/w9uPTd
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!