Mastering C Programming from Scratch
📚 Tutorial Structure 📌 1. Introduction to C What is C Programming? History & Use Cases Tools & Environment Setup (GCC, Code::Blocks, Visual Studio Code) Writing Your First Program (Hello World) 📌 2. Basics...
Category: C
Chapter 1: Introduction to C Programming
1. What exactly is C? C is a general-purpose, procedural programming language. It was created between 1972–1973 by Dennis Ritchie at Bell Labs (USA) while he was working on developing the UNIX operating system....
Chapter 2: Your First C Program
1. Your First C Program – “Hello, World!” This is the classic first program every C programmer writes. It simply prints “Hello, World!” on the screen. C
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// My first C program – Hello, World! // Date: January 20, 2026 #include <stdio.h> // Library needed for printf int main() // Program starts here { printf("Hello, World!\n"); // Prints the message printf("Learning C is fun!\n"); // Extra line for fun return 0; // Program ends successfully } |
Output when you run it: text...
Chapter 3: Variables, Data Types, and Constants
1. Basic Data Types in C C has a few basic (primitive) data types. Here are the most important ones beginners use: Data Type What it stores Typical Size (bytes) Range (approximate) Example Value...
Chapter 4: Input and Output
1. printf() – Printing Output (We Already Know Some) printf() is used to print messages and values on the screen. Basic Syntax: C
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printf("message", variables); |
Format Specifiers (very important – you must use the correct...
Chapter 5: Operators in C
1. Arithmetic Operators These are used for mathematical calculations. Operator Name Example Result (if a=10, b=3) + Addition a + b 13 – Subtraction a – b 7 * Multiplication a * b 30...
Chapter 6: Decision Making (Control Flow)
1. if Statement (Simple Decision) Syntax: C
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if (condition) { // code to run if condition is true } |
Condition must be something that is true (non-zero) or false (zero). Example: C
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#include <stdio.h> int main() { int age; printf("Enter your age: "); scanf("%d", &age); if (age >= 18) { printf("You are eligible to vote! 🎉\n"); } printf("Thank you for checking.\n"); // This runs always return 0; } |
Sample Output: If you enter 20 → “You are eligible to vote!”...
Chapter 7: Loops in C
C gives us three main types of loops: for loop while loop do…while loop We will also learn nested loops, break, and continue. 1. for Loop Best when you know how many times you...
Chapter 8: Arrays
1. What is an Array? Array is a collection of elements of the same type All elements are stored in contiguous (next to each other) memory locations Each element has an index starting from...
Chapter 9: Strings in C
A string in C is simply a collection of characters (letters, numbers, symbols) that ends with a special character called null terminator (\0). In C, there is no built-in string type like in Python...
