C Programming Tutorials — From Beginner Basics to Advanced Concepts

Flat illustration of a bold letter C with pointer arrows memory blocks stack diagram and file handling icons representing C programming tutorials

C is one of the most important programming languages ever created. Developed in the early 1970s, it remains the foundation of operating systems, embedded systems, compilers, and high-performance software used across the world today. Learning C gives you a deep understanding of how computers actually work — memory, pointers, data structures, and low-level system operations that higher-level languages hide from you.

At MYCPLUS we have been publishing C programming tutorials, source code examples, and practical guides since 2004. Whether you are writing your first Hello World program or working through complex data structure implementations, this section covers every stage of the C learning journey. You will find step-by-step tutorials, working source code you can compile and run immediately, and clear explanations of concepts that are often poorly explained elsewhere.

C is the language that powers Linux, Windows internals, embedded microcontrollers, game engines, and countless performance-critical applications. If you want to become a serious systems programmer, understand how memory works, or simply build a rock-solid foundation before moving to C++, Java or Python — start here.

What You’ll Learn:

  • Core C syntax — variables, data types, operators, control flow and functions explained from first principles
  • Pointers and memory management — heap allocation, pointer arithmetic, dynamic arrays and avoiding memory leaks
  • Data structures in C — arrays, linked lists, stacks, queues and trees implemented from scratch
  • File handling — reading and writing files, binary data and practical I/O operations in C
  • Algorithms in C — sorting, searching, recursion and graph traversal with working source code examples
  • Systems programming concepts — understanding how C interacts with the operating system, processes and memory

Why MYCPLUS Trusted by C programmers since 2004 — every tutorial includes working source code you can compile, run and learn from immediately.

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C Program to Add Sequence of Numbers

This C program reads a sequence of positive integers as input by the user and print their sum. The program keeps on taking the input from user until user enters number ( 0 ) and program calculates the sum of all input numbers. Finally this C program prints the sum of all the numbers on screen and terminates.

Functions in C

C Programming: Example C Program to Understand Functions

This C source code demonstrates the implementation of fundamental mathematical operations using functions in the C programming language. It includes functions for calculating the square of a number, reading user input, and determining the area of a rectangle. The main program showcases the usage of these functions with specific values, providing a practical example for beginners to understand basic C programming concepts.

Copying One File to another in C

Copying One File to another in C

This is a simple C program that copies the contents of one file onto another file. It is similar to Unix’s cp  command. This C program is called with two parameters i.e. the names of two files. The contents of the file referenced in second parameter are copied onto the file which is referenced by first parameter. 

Defensive Programming Techniques

Defensive Programming Techniques

This source code is from Thinking in C++, 2nd Edition, Volume 2, by Bruce Eckel & Chuck Allison. You can use Borland, G++ (For version 3 and above only), Microsoft (For C++ with .NET only) to compile and build this source code. Writing perfect software may be a daunting task for developers, but a few defensive techniques which are routinely applied can go a long way toward narrowing the gap between code and ideal. Defensive programming practices are often used where high availability of the application is required, safety if utmost concern, or security is needed for application to work.

graphics.h Reference

Graphics Library (graphics.h) Reference (part 3)

In the previous two posts (Graphics Library Reference part 1 and part 2) I have discussed few important functions of graphics.h library in C Programming. As promised here is the sample C language program which will demonstrate the use of graphics functions using C language and draw some geometrical shapes on the console. If you have followed the previous two posts the you will not find the source code difficult to compile and execute. If you still experience any problems using the source code or compiling the code the please do let me know, and I will try to figure it out.

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