What Is a Pointer in C? A Beginner's Guide

Short summary

A beginner-friendly explanation of C pointers that breaks down the concept using a house-address analogy. Covers declaration with int *ptr = &var, dereferencing with *ptr, and the main use cases: passing large data efficiently, modifying variables inside functions, dynamic memory allocation, and array/string handling. Includes a practical code example and common pitfalls like uninitialized pointers and memory leaks.

• •Pointers store memory addresses rather than values, explained via house-address analogy
• •Key use cases: efficient data passing, in-function modification, dynamic allocation, arrays
• •Common pitfalls: uninitialized pointers, NULL dereference, forgetting free()

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