How errno Works in C — Error Handling Without Exceptions
Learn how errno works in C, the difference between perror and strerror, when to save errno, and how to write functions that propagate errors correctly.
Read articleUndefined Behavior in C — Why the Compiler Can Do Anything It Wants
Undefined behavior in C is not just a crash. Learn what triggers UB, how the compiler exploits it for optimization, and how to write defensively.
Read articleArrays vs Pointers in C — The Most Common Misconception
Arrays and pointers in C are related but not the same. Learn when they behave identically, when they differ, and the bugs that come from confusing them.
Read articleHow to Compile C Code with GCC — Flags, Standards, and Options
Learn how to compile C programs with GCC. Essential flags, language standards, optimisation levels, and debugging options explained.
Read articleString Functions in C — strcmp, strcpy, strlen, strcat Pitfalls
Learn how C string functions work and where they fail. Buffer overflows in strcpy, misusing strcmp, and safer alternatives.
Read articleFunction Pointers in C — What They Are and When to Use Them
Function pointers let you store and call functions dynamically in C. Learn the syntax, callbacks, dispatch tables, and common patterns.
Read articleC Preprocessor Directives — #define, #ifdef, #include Explained
Learn how the C preprocessor works. #define macros, #ifdef guards, #include, #pragma, and the common mistakes that cause subtle bugs.
Read articleHow to Implement a Linked List in C from Scratch
Build a singly linked list in C from scratch. Node creation, insertion, deletion, traversal, and memory management with complete working code.
Read articleBitwise Operators in C — Practical Guide with Real Examples
Learn how bitwise operators work in C with practical examples. AND, OR, XOR, NOT, shift operators and real use cases like flags and packing.
Read articleC Structs Explained — typedef, Nested Structs, and Memory Padding
Learn how structs work in C — how to declare them, use typedef, nest them, pass them to functions, and understand memory padding.
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