In C, using malloc to allocate memory for a linked list uses which memory allocation scheme? O Heap allocation Static allocation
In C, using malloc to allocate memory for a linked list uses which memory allocation scheme? O Heap allocation Static allocation
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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Transcribed Image Text:**Question:**
In C, using malloc to allocate memory for a linked list uses which memory allocation scheme?
- ○ Heap allocation
- ○ Static allocation
**Explanation:**
The question asks about the type of memory allocation used when `malloc` is employed in the C programming language to allocate memory for a linked list.
- **Heap Allocation:** This is the allocation scheme used when memory is dynamically allocated at runtime. Functions like `malloc`, `calloc`, and `realloc` provide memory space from the heap. It allows for flexible memory management and is suitable for data structures like linked lists, where memory needs can change during execution.
- **Static Allocation:** This occurs when memory size is defined at compile time. Memory is allocated in a fixed amount and cannot be increased or decreased during runtime, typical of arrays with predefined sizes.
When `malloc` is used, it results in heap allocation.

Transcribed Image Text:In C, given:
```c
typedef struct Node {
int Data;
struct Node *Link;
} NODE_T;
NODE_T *NPtr, *Top = NULL;
int Count;
for (Count = 3; Count < 6; Count++) {
NPtr = malloc ( sizeof(NODE_T) );
NPtr->Data = Count * 2;
NPtr->Link = Top;
Top = NPtr;
}
```
What list is created?
- a) Top -> 6 -> 8 -> 10 -> NULL
- b) Top -> 6 -> 8 -> 10 -> 12 -> NULL
- c) Top -> 8 -> 10 -> 12 -> NULL
- d) Top -> 10 -> 8 -> 6 -> NULL
- e) Top -> 12 -> 10 -> 8 -> 6 -> NULL
- f) Top -> 12 -> 10 -> 8 -> NULL
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