Learning C Programming Repository

Directory Structure

📁 Learning C/
├── 📁 01_Basics/
│   ├── 01_helloworld.c
│   ├── 02_variables.c
│   ├── 03_arithmetic.c
│   └── Practice/
│       ├── P01_volumeofsphere.c
│       └── P02_percentageCalc.c
│
├── 📁 02_If_Else/
│   ├── 01_basicif.c
│   ├── 02_ifelseif.c
│   └── Practice/
│       ├── P01_oddeven.c
│       └── P02_leapyear.c
│
├── 📁 03_Loops/
│   ├── 01_while.c
│   ├── 02_for.c
│   └── Practice/
│       ├── P01_fibonacci.c
│       └── P02_armstrong.c
│
├── 📁 04_Functions/
│   ├── 01_basics_functions.c
│   ├── 02_recursion.c
│   └── Practice/
│       ├── P01_factorial.c
│       └── P02_combination.c
│
├── 📁 05_Pointers/
│   ├── 01_basic.c
│   ├── 02_doublepointer.c
│   └── Practice/
│       └── P01_swap2num.c
│
├── 📁 06_Array/
│   ├── 01_basicArray.c
│   ├── 02_2DArray.c
│   └── Practice/
│       ├── P01_arrayReverse.c
│       └── P02_matrixAdd.c
│
└── 📁 07_Strings/
    ├── 01_basic.c
    ├── 02_stringFunctions.c
    └── Practice/
        ├── P01_reverse.c
        └── P02_palindrome.c

About This Repository

This repository contains my personal C code written while learning and revising core concepts of the C programming language. It includes everything from basic syntax and control structures to more advanced topics as I progress.

⚠️ Note: This is an ongoing repository — I’ll keep adding more code as I continue learning and practicing.

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📚 Topics Covered (so far)

• ✅ Basics (variables, data types, operators)
• ✅ Control Structures (if, else, switch, loops)
• ✅ Functions
• ✅ Arrays
• ✅ Strings
• ✅ Pointers
• 🔜 File Handling
• 🔜 Structures & Unions
• 🔜 Dynamic Memory Allocation

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Folder Contents

📁 01_Basics

Basic C programming concepts including:

• 01_helloworld.c - First program in C
• 02_variable.c - Variable declaration and usage
• 03_arithmetic.c - Basic arithmetic operations
• 04_modulo.c - Modulo operation examples
• 05_characters.c - Character handling
• Practice programs:
  • P01_volumeofsphere.c - Calculate sphere volume
  • P02_PrecentageCalc.c - Calculate percentages
  • P03_SimpleIntrest.c - Simple interest calculation
  • P04_SumOfTwoNum.c - Adding two numbers
  • P05_Remainder.c - Finding remainder

📁 02_If_Else

Conditional statements including:

• P01_oddeven.c - Check odd/even numbers
• P02_leapyear.c - Leap year verification
• p03_absoluteConversion.c - Convert to absolute value
• P04_profitloss.c - Calculate profit/loss
• P05_areaperimeter.c - Area and perimeter comparison
• p06_threedigitnum.c - Three digit number check
• p07_divisibleby5and3.c - Divisibility check
• p08_greatest3num.c - Find greatest among 3 numbers
• p09_gradecalc.c - Grade calculator
• p10_straightline.c - Check if points form straight line

📁 03_Loops

Loop control structures including:

• While loops: 01_while.c
• Various practice programs including:
  • Fibonacci series: p18_fibonacci.c
  • Armstrong numbers: p21_armstrong.c
  • Number patterns: p06_AP_to_n.c
  • Tables: p05_tableofn.c
  • Digit operations: p11_countthedigit.c

📁 04_Functions

Function concepts including:

• 01_basics_functions.c - Basic function syntax
• Complex programs using functions:
  • p02_combination.c - Combination calculator
  • p03_pascalTriangle.c - Pascal's triangle
  • p06_primefactor.c - Prime factorization
  • p07_HCF.c - HCF calculator

📁 05_Pointers

Pointer concepts including:

• 01_basic.c - Basic pointer operations
• 02_doublepointer.c - Double pointer concepts
• p01_swap2num.c - Number swapping using pointers

📁 06_Array

Array operations including:

• 01_basicArray.c - Array basics
• 02_garbageValue.c - Understanding garbage values
• Various array operations:
  • Searching: p04_maxValue.c
  • Manipulation: p05_changingElemValue.c
  • Reversing: p11_reverseArray.c
  • Second largest: p09_secondLargest.c

📁 07_Strings

String handling including:

• 01_basic.c - String basics
• 02_stringAsPointer.c - Strings as pointers
• 03_builtinFunctions.c - Built-in string functions
• String operations:
  • p01_reverse.c - String reversal
  • p02_insertingElement.c - Character insertion

Getting Started

1. Clone this repository
2. Install a C compiler (GCC recommended)
3. Open in Visual Studio Code
4. Navigate through folders to learn specific topics
5. Each topic contains example codes and practice problems

Prerequisites

• C Compiler (GCC)
• Visual Studio Code
• C/C++ VS Code Extension

Note

• Each folder contains incremental learning examples
• Practice problems (P*) are included in each section
• Source files include detailed comments for better understanding

How to Compile and Run

# Navigate to specific example
cd 01_Basics

# Compile C file
gcc filename.c -o

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Author

• Nikhil Karn
  • GitHub: @nikhilkrn
  • LinkedIn: Nikhil Karn
  • Email: work@nikhillkarn.com.np

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Happy coding :)