C99 and C11 Features You Should Actually Be Using
Learn the C99 and C11 features that improve everyday code: designated initializers, compound literals, stdint.h, _Bool, _Generic, and atomic operations.
Read articlevoid* in C — Generic Programming Without Templates
Learn how void pointers work in C, how to write generic functions and data structures, and the rules for casting, alignment, and type safety.
Read articleHow to Implement a Stack in C Using an Array
Learn how to implement a stack data structure in C using a dynamic array. Push, pop, peek, and error handling with a growable implementation.
Read articleatoi vs strtol in C — Why atoi Is Dangerous and What to Use Instead
Learn why atoi cannot detect errors, how strtol provides complete error checking, and the full pattern for converting strings to integers safely in C.
Read articleCircular Buffer in C — Ring Buffer Implementation from Scratch
Learn how to implement a circular buffer (ring buffer) in C. Fixed-size FIFO, head/tail pointers, overflow handling, and thread-safe considerations.
Read articleHow realloc Actually Works in C — Growth Strategies and the Pitfalls
Learn how realloc works under the hood, when it copies vs extends in place, how to grow dynamic arrays correctly, and the bugs that come from misusing it.
Read articleWriting Portable C Code — Platform Differences That Will Bite You
Learn the C portability traps that cause bugs when moving between Linux, macOS, and Windows. Integer sizes, endianness, type signedness, and compiler differences.
Read articlegetchar and putchar in C — Character I/O That Actually Works
Learn how getchar and putchar work in C, why getchar returns int not char, how to use them to copy input, count characters, and avoid scanf’s buffer problems.
Read articleint main() vs void main() in C — Why the Return Type Matters
Learn why int main() is correct in C and void main() is not. Understand return values, EXIT_SUCCESS, argc/argv, and the two valid signatures for main.
Read articleOperator Precedence in C — The Bugs That Look Correct
Learn the C operator precedence rules that cause the most real bugs. Bitwise operators, ternary, sizeof, and pointer arithmetic traps explained with examples.
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