Web Reference: Nov 14, 2025 · Initializing a pointer ensures it points to a valid memory location before use. We have to first dereference the pointer to access the value present at the memory address. This is done with the help of dereferencing operator (*) (same operator used in declaration). Computer memory (RAM) is a collection of contiguous block of bytes. Where individual block is called as cell (memory cell). Each cell has a unique numeric address (also known as physical memory address) associated with it. These addresses starts from zero and runs up to maximum memory size (in bytes). For example, memory location of a 64KB RAM star... Learn how to declare pointer variables, initialize them correctly, and safely access memory locations in C programs.
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