Question

Explain the concept of dynamic memory allocation in C. Write a C program that dynamically allocates
memory to store the details of N products (Product ID, Product Name, Quantity, Price).
The program should:
 Accept product details.
 Display all products.
 Find the costliest product.
 Calculate the total inventory value.
 Release the allocated memory before termination.
Discuss the advantages of dynamic memory allocation in this context.

08 Aug 2026
Answer :
Word Count : 521
Dynamic memory allocation in C is a technique used to allocate and manage memory during program execution rather than fixing the memory size at compile time. It is particularly useful when the number of data items is not known in advance. In C, dynamic memory is allocated from the heap using functions such as `malloc()`, `calloc()`, `realloc()`, and released using `free()`. The header file `` provides these functions. The `malloc()` function allocates a specified number of bytes and returns a pointer to the allocated memory. If sufficient memory is not available, it returns `NULL`. After using dynamically allocated memory, `free()` should be used to prevent memory leaks. In an inventory management problem, the number of products, N, may vary. Therefore, instead of declaring a fixed-size array, memory can be allocated according to the actual number of products entered by the user. A structure can be used
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Explain the concept of dynamic memory allocation in C. Write a C program that dynamically allocates
memory to store the details of N products (Product ID, Product Name, Quantity, Price).
The program should:
 Accept product details.
 Display all products.
 Find the costliest product.
 Calculate the total inventory value.
 Release the allocated memory before termination.
Discuss the advantages of dynamic memory allocation in this context.

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