Programming
Clear explanations, study tips and ideas — written to help you learn.
Recursion in C Explained With the Call Stack: Base Case, Factorial and Fibonacci
Recursion is a function that calls itself. Trace factorial(4) frame by frame on the call stack, learn why every recursive function needs a base case, see why naive Fibonacci is so slow, and find out when a loop is the better choice.
ProgrammingWhat Happens When You Compile a C Program? Preprocessing, Compiling, Assembling and Linking
gcc hello.c -o hello looks like one step, but it is four: the preprocessor, the compiler, the assembler and the linker. See what each one does, look at the files it produces with gcc -E, -S and -c, and learn which stage each error message comes from.
Programming10 Common C Programming Mistakes Beginners Make (and How to Fix Them)
Your C program compiles but prints the wrong answer? It is probably one of these ten classic mistakes: = instead of ==, a missing &, integer division, a semicolon after if, going past the end of an array and more — each with the wrong code, the right code and why.
ProgrammingStrings in C: Why Every String Ends With '\0' (and How It Affects Your Programs)
C has no string type — a string is a char array that ends with the null character '\0'. Learn how strings sit in memory, why the array needs one extra byte, how printf and strlen find the end, and how to read a full name safely with fgets.
ProgrammingPointers in C Explained Simply: Addresses, & and * Without the Fear
Pointers scare many C beginners, but the idea is simple: a pointer is a variable that stores an address. Learn & and *, see a pointer change a variable, write a swap function that really works, and avoid the mistakes that crash programs.
ProgrammingHow to Start Programming as a Beginner: A Friendly Guide to Learning C
New to programming? Start your journey with C! This beginner-friendly guide takes you from your first `Hello World` to variables, conditions, loops, functions, arrays, and problem-solving—with simple examples, practical tips, and a clear roadmap to build confidence step by step.