C Tutorial 42 Null Pointer NuiJ0EXfTJ4

Web Reference: Jan 10, 2025 · To check for a null pointer before accessing any pointer variable. By doing so, we can perform error handling in pointer-related code, e.g., dereference a pointer variable only if it’s not NULL. A NULL pointer in C is a pointer that doesn't point to any of the memory locations. The NULL constant is defined in the header files stdio.h, stddef.h as well as stdlib.h. This tutorial covers various aspects of NULL pointers in C, from basic initialization and checking to practical applications in memory management and data structures.

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