C
13 articles in this topic
Header Files and Linking in C: Build a Multi-File Program Step by Step
Build and debug a three-file C program while learning where declarations, definitions, external symbols, and storage belong.
C to C++ Transition: Syntax Changes, Classes and Runnable Examples
Move a working C record into an encapsulated C++ class, then replace common pointer, buffer, and allocation patterns with clearer C++ alternatives.
Strings in C Tutorial: Declaration, Input, Functions and Worked Examples
Learn how C strings use character arrays and the null terminator, then practise safe input, traversal, reversal, library calls and capacity checks.
Multidimensional Arrays in C: 2D Arrays, Row-Major Memory and Runnable Examples
Learn how C lays out and traverses fixed-size multidimensional arrays. A complete 3-by-4 sales program connects indexing, totals, addresses and function parameters.
Operators and Precedence in C: Step-by-Step Tutorial with Runnable Examples
Learn how C groups arithmetic, relational, logical, bitwise, conditional, and assignment operators. Trace exact outputs and repair common expression mistakes.
Input and Output in C: printf, scanf, fgets and Worked Examples
Learn how C moves text through standard streams, how format strings control conversion, and why checked line input is safer. The worked programs trace every input, return value and output.
Conditionals in C: if, if-else, else-if and switch with runnable examples
Learn how C chooses a path through a program. Predict and trace complete examples covering conditions, ladders, logical operators, nesting and switch.
STL Overview in C++: Containers, Iterators and Algorithms with Runnable Examples
Build a practical STL mental model, then trace seven scores through sorting, searching, filtering and aggregation. The same data clarifies map, set and priority_queue choices.
Command Line Arguments in C: argc and argv Tutorial with Runnable Examples
Learn how argc and argv carry command line input into a C program, then practise argument tracing, numeric conversion, validation, and common fixes.
C Tutorial: The Complete Learning Path from First Program to Pointers and Projects
Learn C in dependency order, from compiling your first program to understanding pointers, allocating memory, reading files, and completing a useful project.
File Handling in C: fopen Modes, fscanf vs fgets and the Predict-the-Output Questions
Trace one text file byte by byte to see what fopen returns, where fscanf stops, why fgets may read a blank line and how to write a correct input loop.
Structures and Unions in C: Padding, Alignment and Worked sizeof Problems for GATE
Calculate structure and union sizes byte by byte, see where padding enters, and learn how member order changes the result.