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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. struct node
  4. {
  5. 	int a;
  6. 	struct node* next;
  7. };
  8.  
  9. node* head;
  10. node* tail;
  11.  
  12. void printlist()
  13. {
  14. 	node* temp;
  15. 	temp=head;
  16. 	printf("Now the Queue is-> ");
  17. 	while(temp!=NULL)
  18. 	{
  19. 		printf("%d ",temp->a);
  20. 		temp=temp->next;
  21. 	}
  22. 	puts("");
  23. }
  24.  
  25. void add(int x)
  26. {
  27.  
  28. 	if(head==NULL)
  29. 	{
  30. 		head=(node*) malloc(sizeof(node));
  31. 		head->a=x;
  32. 		head->next=NULL;
  33.  
  34. 		tail=head;
  35. 	}
  36. 	else
  37. 	{
  38. 		node* temp=(node*) malloc(sizeof(node));
  39.  
  40. 		temp->a=x;
  41. 		temp->next=NULL;
  42. 		tail->next=temp;
  43. 		tail=temp;
  44. 	}
  45.  
  46. }
  47. void del()
  48. {
  49. 	if(head==NULL)
  50. 	{
  51. 		printf("Queue is empty\n");
  52. 	}
  53. 	else
  54. 	{
  55. 		printf("Deleted item is: %d\n",head->a);
  56. 		node* temp=(node*) malloc(sizeof(node));
  57.  
  58. 		temp=head;
  59. 		head=head->next;
  60. 		temp->next=NULL;
  61. 		free(temp);
  62.  
  63. 		printlist();
  64. 	}
  65. }
  66.  
  67. int main()
  68. {
  69. 	int i,num;
  70.  
  71.  
  72. 	while(~scanf("%d",&num) && num)
  73. 	{
  74. 		switch(num)
  75. 		{
  76. 		case 1:
  77. 			scanf("%d",&i);
  78.  
  79. 			add(i);
  80. 			printlist();
  81. 			break;
  82. 		case 2:
  83. 			del();
  84. 			break;
  85. 		case 3:
  86. 			break;
  87. 		}
  88. 	}
  89. 	return 0;
  90. }
  91.  
Success #stdin #stdout 0s 2988KB
comments (?)
stdin
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1
10
1
20
1
30
2
2
2
2
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stdout
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Now the Queue is-> 10 
Now the Queue is-> 10 20 
Now the Queue is-> 10 20 30 
Deleted item is: 10
Now the Queue is-> 20 30 
Deleted item is: 20
Now the Queue is-> 30 
Deleted item is: 30
Now the Queue is-> 
Queue is empty
https://ideone.com/0qQyQY
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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