stsharin

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Apr 9th, 2018
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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct Node
  5. {
  6. int data;
  7. struct Node *next;
  8. }node;
  9.  
  10. node* top=NULL;
  11.  
  12. void enqueue(int data)
  13. {
  14.  
  15. node*newnode=(node*)malloc(sizeof(node));
  16. newnode->data=data;
  17. newnode->next=NULL;
  18. if(top==NULL)
  19. {
  20. top=newnode;
  21. }
  22. else
  23. {
  24. node *current=top;
  25. while(current->next!=NULL)
  26. {
  27. current=current->next;
  28. }
  29. current->next=newnode;
  30. }
  31. }
  32.  
  33. void dequeue()
  34. {
  35. node* newnode;
  36. if(top==NULL)
  37. {
  38. printf("Queue is empty!\n");
  39. return;
  40. }
  41. newnode=top;
  42. top=top->next;
  43. free(newnode);
  44. }
  45.  
  46. void print()
  47. {
  48. node* current=top;
  49. printf("New List is: ");
  50. while(current!=NULL)
  51. {
  52. printf("%d ",current->data);
  53. current=current->next;
  54. }
  55. printf("\n");
  56.  
  57. }
  58.  
  59. int main()
  60. {
  61. enqueue(1);
  62. print();
  63. enqueue(2);
  64. print();
  65. enqueue(3);
  66. print();
  67. dequeue();
  68. print();
  69. enqueue(5);
  70. print();
  71. dequeue();
  72. print();
  73. enqueue(8);
  74. print();
  75. dequeue();
  76. print();
  77. return 0;
  78. }
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