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×3 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 struct node *newNode malloc(sizeof(struct node)); newNode -> target; newNode-> NULL; //if head is NULL, it is an empty list if (*headptr == NULL) *headPtr = newNode; target node => new node; node=>next = NULL; target node=>next != NULL;

×3 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 struct node *newNode malloc(sizeof(struct node)); newNode -> target; newNode-> NULL; //if head is NULL, it is an empty list if (*headptr == NULL) *headPtr = newNode; target node => new node; node=>next = NULL; target node=>next != NULL;

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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The image displays a section of error messages from a C++ compiler output. Below is the transcription of the text: ``` 10 50 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] invalid application of 'sizeof' to incomplete type 'node' 12 9 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] invalid use of incomplete type 'struct node' 3 0 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... In file included from C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\OneDrive\Documents\Assignment 5P1\llcpImp.cpp 9 11 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] forward declaration of 'struct node' 12 11 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] expected unqualified-id before '=' token ``` ### Explanation of the Errors: 1. **Invalid application of 'sizeof' to incomplete type 'node':** - This error indicates that the `sizeof` operator is being used on a type `node` which hasn't been completely defined yet. Incomplete types are declared but not fully defined; hence, their size cannot be determined. 2. **Invalid use of incomplete type 'struct node':** - This suggests that there is an attempt to use the `struct node` in a way that requires knowledge of its full definition, but the compiler only sees a forward declaration. 3. **In file included from ... llcpImp.cpp:** - Indicates the location of the file from which the error messages originate. Understanding this helps in tracking the source of errors in complex projects with multiple file inclusions. 4. **Forward declaration of 'struct node':** - Implies that a `struct node` is declared but not defined completely at the point of use. A forward declaration specifies the existence of a type without giving details about its contents, typically used to handle circular dependencies. 5. **Expected unqualified-id before '=' token:** - This error usually occurs when there is a syntax error, often caused by unexpected tokens or an improper declaration/initialization format. These errors are typical in
Transcribed Image Text:The image displays a section of error messages from a C++ compiler output. Below is the transcription of the text: ``` 10 50 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] invalid application of 'sizeof' to incomplete type 'node' 12 9 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] invalid use of incomplete type 'struct node' 3 0 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... In file included from C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\OneDrive\Documents\Assignment 5P1\llcpImp.cpp 9 11 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] forward declaration of 'struct node' 12 11 C:\Users\lr1821655\OneDrive\Dropbox\Screenshots\One... [Error] expected unqualified-id before '=' token ``` ### Explanation of the Errors: 1. **Invalid application of 'sizeof' to incomplete type 'node':** - This error indicates that the `sizeof` operator is being used on a type `node` which hasn't been completely defined yet. Incomplete types are declared but not fully defined; hence, their size cannot be determined. 2. **Invalid use of incomplete type 'struct node':** - This suggests that there is an attempt to use the `struct node` in a way that requires knowledge of its full definition, but the compiler only sees a forward declaration. 3. **In file included from ... llcpImp.cpp:** - Indicates the location of the file from which the error messages originate. Understanding this helps in tracking the source of errors in complex projects with multiple file inclusions. 4. **Forward declaration of 'struct node':** - Implies that a `struct node` is declared but not defined completely at the point of use. A forward declaration specifies the existence of a type without giving details about its contents, typically used to handle circular dependencies. 5. **Expected unqualified-id before '=' token:** - This error usually occurs when there is a syntax error, often caused by unexpected tokens or an improper declaration/initialization format. These errors are typical in
```c struct node *newNode = malloc(sizeof(struct node)); newNode -> target; newNode-> = NULL; //if head is NULL, it is an empty list if(*headptr == NULL) *headPtr = newNode; target node => new node; node->next = NULL; target node->next != NULL; ``` ### Explanation This code snippet demonstrates the initialization and insertion of a new node in a linked list. Here’s what each part does: 1. **Node Allocation:** ```c struct node *newNode = malloc(sizeof(struct node)); ``` - Allocates memory for a new node. 2. **Node Assignment:** ```c newNode -> target; newNode-> = NULL; ``` - Assigns target values to the new node and initializes it to point to NULL, indicating that it doesn’t yet link to another node. 3. **Handling Empty List:** ```c if(*headptr == NULL) ``` - Checks if the head pointer is NULL. If it is, the list is empty. 4. **Insertion:** ```c *headPtr = newNode; target node => new node; node->next = NULL; target node->next != NULL; ``` - If the list is empty, the newly created node becomes the head. - Adjustments to link the nodes accordingly, ensuring proper list connections. This code is commonly used for managing dynamic data in C using linked lists, allowing for efficient data manipulation and storage.
Transcribed Image Text:```c struct node *newNode = malloc(sizeof(struct node)); newNode -> target; newNode-> = NULL; //if head is NULL, it is an empty list if(*headptr == NULL) *headPtr = newNode; target node => new node; node->next = NULL; target node->next != NULL; ``` ### Explanation This code snippet demonstrates the initialization and insertion of a new node in a linked list. Here’s what each part does: 1. **Node Allocation:** ```c struct node *newNode = malloc(sizeof(struct node)); ``` - Allocates memory for a new node. 2. **Node Assignment:** ```c newNode -> target; newNode-> = NULL; ``` - Assigns target values to the new node and initializes it to point to NULL, indicating that it doesn’t yet link to another node. 3. **Handling Empty List:** ```c if(*headptr == NULL) ``` - Checks if the head pointer is NULL. If it is, the list is empty. 4. **Insertion:** ```c *headPtr = newNode; target node => new node; node->next = NULL; target node->next != NULL; ``` - If the list is empty, the newly created node becomes the head. - Adjustments to link the nodes accordingly, ensuring proper list connections. This code is commonly used for managing dynamic data in C using linked lists, allowing for efficient data manipulation and storage.
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This is C++ program dealing with linkedlist data structure implementing with struct.

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It say that line 11 scope was not define 

9 10 11 12 13 14 15 16 17 18 void IsolateTargetSoloAsTail(Node* headPtr, int target) pointer_name (cast-type*) malloc(size); struct node* newNode = (struct node*) malloc(sizeof(struct node)); newNode->data = target; newNode->next = NULL; //if head is NULL, it is an empty List if (*headptr == NULL) *headPtr = newNode; =
Transcribed Image Text:9 10 11 12 13 14 15 16 17 18 void IsolateTargetSoloAsTail(Node* headPtr, int target) pointer_name (cast-type*) malloc(size); struct node* newNode = (struct node*) malloc(sizeof(struct node)); newNode->data = target; newNode->next = NULL; //if head is NULL, it is an empty List if (*headptr == NULL) *headPtr = newNode; =
11 11 11 11 1 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 17 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 22 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 27 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 12 64 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 13 8 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 0 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\... C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 3 11 8 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 14 [Error] 'pointer_name' was not declared in this scope [Error] 'cast' was not declared in this scope [Error] 'type' was not declared in this scope [Error] expected primary-expression before ')' token [Error] invalid application of 'sizeof' to incomplete type 'node' [Error] invalid use of incomplete type 'struct node' In file included from [Error] forward declaration of 'struct node' [Error] invalid use of incomplete type 'struct node' C:\Users\r1821655\OneDrive\Dropbox\Screenshots\OneDrive\Documents\Assignment 5P1\llcplmp.cpp
Transcribed Image Text:11 11 11 11 1 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 17 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 22 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 27 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 12 64 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 13 8 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 0 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\... C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 3 11 8 C:\Users\r1821655\OneDrive\Dropbox\Screenshots\One... 14 [Error] 'pointer_name' was not declared in this scope [Error] 'cast' was not declared in this scope [Error] 'type' was not declared in this scope [Error] expected primary-expression before ')' token [Error] invalid application of 'sizeof' to incomplete type 'node' [Error] invalid use of incomplete type 'struct node' In file included from [Error] forward declaration of 'struct node' [Error] invalid use of incomplete type 'struct node' C:\Users\r1821655\OneDrive\Dropbox\Screenshots\OneDrive\Documents\Assignment 5P1\llcplmp.cpp
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