How to Use GDB to Debug a Segfault in C
Learn how to use GDB to find segfaults, inspect variables, set breakpoints, and navigate the call stack. A practical guide for C programmers.
Read articleInteger Overflow in C — Signed, Unsigned, and Why It Matters
Integer overflow in C behaves differently for signed and unsigned types. Learn what wraps, what is undefined, and how to detect overflow before it causes bugs.
Read articleThe static Keyword in C — Three Completely Different Meanings
The static keyword in C has three distinct meanings depending on where it appears. Learn static variables, static functions, and static local variables with examples.
Read articleHow 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.
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