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  1. #include "stdlib.h" /* library header for memory allocation functions*/
  2. #include <stdio.h>  /* I/O library header for input/output functions*/
  3. #include "doubly.h"
  4.  
  5. /* Function to insert a new node at the beginning of a doubly linked list*/
  6. Node *insert_at_begin(Node **head, int data)
  7. {
  8.     /*Allocate memory for the new node and check if the allocation was successful*/
  9.     Node *newNode = malloc(sizeof(Node));
  10.     if (newNode == NULL)
  11.     {
  12.         return (NULL); /*If memory allocation failed, return NULL*/
  13.     }
  14.  
  15.     newNode->data = data;
  16.     newNode->prev = NULL; /* Set the previous pointer of the new node to NULL, as it will be the first node in the list*/
  17.     newNode->next = *head; /* Set the next pointer of the new node to the current head of the list*/
  18.  
  19. 	head->prev = newNode;
  20.     /*Update the head of the list to point to the new node*/
  21.     *head = newNode; /*
  22. is this extra line correct #include "stdlib.h" /* library header for memory allocation functions*/
  23. #include <stdio.h>  /* I/O library header for input/output functions*/
  24. #include "doubly.h"
  25.  
  26. /* Function to insert a new node at the beginning of a doubly linked list*/
  27. Node *insert_at_begin(Node **head, int data)
  28. {
  29.     /*Allocate memory for the new node and check if the allocation was successful*/
  30.     Node *newNode = malloc(sizeof(Node));
  31.     if (newNode == NULL)
  32.     {
  33.         return (NULL); /*If memory allocation failed, return NULL*/
  34.     }
  35.  
  36.     newNode->data = data;
  37.     newNode->prev = NULL; /* Set the previous pointer of the new node to NULL, as it will be the first node in the list*/
  38.     newNode->next = *head; /* Set the next pointer of the new node to the current head of the list*/
  39.  
  40. is this extra line correct #include "stdlib.h" /* library header for memory allocation functions*/
  41. #include <stdio.h>  /* I/O library header for input/output functions*/
  42. #include "doubly.h"
  43.  
  44. /* Function to insert a new node at the beginning of a doubly linked list*/
  45. Node *insert_at_begin(Node **head, int data)
  46. {
  47.     /*Allocate memory for the new node and check if the allocation was successful*/
  48.     Node *newNode = malloc(sizeof(Node));
  49.     if (newNode == NULL)
  50.     {
  51.         return (NULL); /*If memory allocation failed, return NULL*/
  52.     }
  53.  
  54.     newNode->data = data;
  55.     newNode->prev = NULL; /* Set the previous pointer of the new node to NULL, as it will be the first node in the list*/
  56.     newNode->next = *head; /* Set the next pointer of the new node to the current head of the list*/
  57.  
  58. 	    /* Update the prev pointer of the node that head is currently pointing to. */
  59. 	if (*head != NULL)
  60. 	{
  61.     	(*head)->prev = newNode;
  62. 	}
  63.     /*Update the head of the list to point to the new node*/
  64.     *head = newNode;
  65.  
  66.     /*Return the updated head of the list*/
  67.     return (*head);
  68. }
  69. 	*head->prev = newNode;
  70.     /*Update the head of the list to point to the new node*/
  71.     *head = newNode;
  72.  
  73.     /*Return the updated head of the list*/
  74.     return (*head);
  75. }*/
  76.  
  77.     /*Return the updated head of the list*/
  78.     return (*head);
  79. }
  80.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c:3:10: fatal error: doubly.h: No such file or directory
 #include "doubly.h"
          ^~~~~~~~~~
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/yr6v8j
language:
C (gcc 8.3)
created:
2 years ago
visibility:
secret

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