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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. #include<string.h>
  4.  
  5. typedef struct
  6. {
  7. int seatnumber;
  8. char name[20];
  9. }PASSENGER;
  10.  
  11. struct node
  12. {
  13. int seatnumber;
  14. char name[20];
  15. struct node *link;
  16. };
  17.  
  18. typedef struct node*NODE;
  19. NODE getnode()
  20. {
  21. NODE x;
  22. x=(NODE)malloc(sizeof(struct node));
  23. if(x==NULL)
  24. {
  25. printf("out of memory\n");
  26. exit(0);
  27. }
  28. return x;
  29. }
  30.  
  31. NODE AddPassenger(PASSENGER item,NODE first)
  32. {
  33. NODE temp;
  34. temp=getnode();
  35. temp->seatnumber=item.seatnumber;
  36. strcpy(temp->name,item.name);
  37. temp->link=NULL;
  38. if(first==NULL)
  39. return temp;
  40. temp->link=first;
  41. return temp;
  42. }
  43.  
  44. NODE AddPassenger_last(PASSENGER item,NODE first)
  45. {
  46. NODE temp,cur;
  47. temp=getnode();
  48. temp->seatnumber=item.seatnumber;
  49. strcpy(temp->name,item.name);
  50. temp->link=NULL;
  51. if(first==NULL)
  52. return temp;
  53. cur=first;
  54. while(cur->link!=NULL)
  55. {
  56. cur=cur->link;
  57. }
  58. cur->link=temp;
  59. return first;
  60. }
  61.  
  62. NODE DeletePassenger(NODE first)
  63. {
  64. NODE temp;
  65. if(first==NULL)
  66. {
  67. printf("passenger list is empty\n");
  68. return NULL;
  69. }
  70. temp=first;
  71. temp=temp->link;
  72. printf("delete passenger record :seatnumber=%d\n",first->seatnumber);
  73. free(first);
  74. return temp;
  75. }
  76.  
  77. NODE DeletePassenger_last(NODE first)
  78. {
  79. NODE cur,prev;
  80. if(first==NULL)
  81. {
  82. printf("passenger list is empty cannot delete\n");
  83. return first;
  84. }
  85. if(first->link==NULL)
  86. {
  87. printf("delete passenger record:seatnumber=%d\n",first->seatnumber);
  88. free(first);
  89. return NULL;
  90. }
  91. prev=NULL;
  92. cur=first;
  93. while(cur->link!=NULL)
  94. {
  95. prev=cur;
  96. cur=cur->link;
  97. }
  98. printf("delete passenger record:seatnumber=%d\n",cur->seatnumber);
  99. free(cur);
  100. prev->link=NULL;
  101. return first;
  102. }
  103.  
  104. void display(NODE first)
  105. {
  106. NODE cur;
  107. int count=0;
  108. if(first==NULL)
  109. {
  110. printf("passenger list is empty\n");
  111. return;
  112. }
  113. cur=first;
  114. while(cur!=NULL)
  115. {
  116. printf("%d\t%s\t\n",cur->seatnumber,cur->name);
  117. cur=cur->link;
  118. count++;
  119. }
  120. printf("number of passengers=%d\n",count);
  121. }
  122.  
  123. void main()
  124. {
  125. NODE first;
  126. int choice;
  127. PASSENGER item;
  128. first=NULL;
  129. for(;;)
  130. {
  131. printf("1.Add passengers from first\n2.Add the passenger from last \n3.Delete the passengers from first \n4.Delete the passenger from last \n5.display the passengers\n6.exit\n");
  132. printf("Enter the choice\n");
  133. scanf("%d",&choice);
  134. switch(choice)
  135. {
  136. case 1:
  137. printf("Seat Number :\n");
  138. scanf("%d",&item.seatnumber);
  139. printf("name :\n");
  140. scanf("%s",item.name);
  141. first=AddPassenger(item,first);
  142. break;
  143. case 2:
  144. printf("Seat Number :\n");
  145. scanf("%d",&item.seatnumber);
  146. printf("name :\n");
  147. scanf("%s",item.name);
  148. first=AddPassenger_last(item,first);
  149. break;
  150. case 3:
  151. first=DeletePassenger(first);
  152. break;
  153. case 4:
  154. first=DeletePassenger_last(first);
  155. break;
  156. case 5:
  157. display(first);
  158. break;
  159. default:
  160. exit(0);
  161. }
  162. }
  163. }
Success #stdin #stdout 0s 5280KB
comments (?)
stdin
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Standard input is empty
stdout
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1.Add passengers from first
2.Add the passenger from last 
3.Delete the passengers from first 
4.Delete the passenger from last 
5.display the passengers
6.exit
Enter the choice
https://ideone.com/PBudWz
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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