💻 C Programming – Concepts, Exercises & Projects

Strong foundation of C language with practical coding, logic building & algorithm learning.

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🎯 About This Repository

This repository is created for learners who want to:

✔ Build strong fundamentals in C
✔ Improve logic & problem-solving skills
✔ Practice syntax, functions, memory, pointers etc.
✔ Prepare for Interviews, College Practical Exams & Online Tests

📌 Includes both Theory + Programs + Output

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🧠 Topics Covered

Category	Skills Covered	Example
Basics	Variables, Operators, Data types	Arithmetic Programs
Control Statements	if-else, switch	Voting, Grade, Menus
Loops	for, while, do-while	Patterns, Series
Functions	Call by Value/Reference	Modular Coding
Arrays	1D & 2D	Search, Sorting
Strings	Functions & Manipulation	Palindrome, Length
Pointers	Basic to Advanced	Pointer to Arrays
Structures	Custom Datatypes	Student Records
File Handling	Read/Write Files	HR MIS System

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1️⃣ What is this Repository?

This repo is my complete C Programming practice space, designed to:

• Build strong fundamentals in C language
• Improve logic building & problem solving
• Prepare for college labs, exams, and interviews
• Create a portfolio of C programs on GitHub

You’ll find:

• ✅ Topic-wise folders
• ✅ Clean, commented C programs
• ✅ Step-by-step learning path
• ✅ Ready-to-run .c files

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2️⃣ Who is this for?

• 🎓 Students learning C for the first time
• 🧠 Beginners who want strong logic & syntax
• 💼 Aspirants preparing for placements / interviews
• 👨‍🏫 Trainers & Faculties who need ready examples

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3️⃣ How to Use This Repository (Step by Step)

1. Clone / Download the Repo

   git clone https://github.com/YOUR-USERNAME/YOUR-C-REPO.git
   

2. Open a Folder by Topic Example: 03_Loops or 05_Arrays

3. Open any .c file in VS Code / CodeBlocks / Dev-C++

4. Compile & Run using GCC or IDE run button

5. Edit & Experiment

   • Change values
   • Try new inputs
   • Add your own variations

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4️⃣ Environment Setup (Step by Step)

🔹 4.1 Install a C Compiler

• For Windows: Install MinGW or use TDM-GCC
• For Linux / macOS: GCC is usually preinstalled (gcc --version)

🔹 4.2 Compile & Run from Terminal

gcc program.c -o program
./program

🔹 4.3 Recommended Editor

• ✅ VS Code (with C/C++ extension)
• ✅ CodeBlocks / Dev-C++

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5️⃣ Repository Structure

C-Programs/
 ├── 01_Basics/
 │    ├── hello_world.c
 │    ├── arithmetic_operations.c
 │    └── datatype_demo.c
 ├── 02_Conditional_Statements/
 │    ├── largest_of_three.c
 │    ├── grade_calculator.c
 │    └── simple_menu.c
 ├── 03_Loops/
 │    ├── factorial.c
 │    ├── fibonacci.c
 │    └── number_patterns.c
 ├── 04_Functions/
 ├── 05_Arrays/
 ├── 06_Strings/
 ├── 07_Pointers/
 ├── 08_Structures/
 ├── 09_File_Handling/
 └── README.md

You can adjust filenames to match your actual programs.

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6️⃣ Step-by-Step Learning Roadmap

6.1 Step 1 – Basics of C

Concepts:

• Syntax, main() function, printf, scanf
• Variables, data types, operators

Example:

#include <stdio.h>

int main() {
    int a = 5, b = 3;
    printf("Sum = %d", a + b);
    return 0;
}

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6.2 Step 2 – Conditional Statements

Concepts:

• if, if-else, nested if, switch

Example (if-else):

if (marks >= 40) {
    printf("Pass");
} else {
    printf("Fail");
}

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6.3 Step 3 – Loops

Concepts:

• for, while, do-while
• Use loops for tables, series, patterns

Example (for loop):

for (int i = 1; i <= 10; i++) {
    printf("%d ", i);
}

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6.4 Step 4 – Functions

Concepts:

• Function declaration, definition, calling
• Return values, parameters

Example:

int add(int x, int y) {
    return x + y;
}

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6.5 Step 5 – Arrays

Concepts:

• 1D and 2D arrays
• Traversal, search, basic sort

Example:

int arr[5] = {4, 2, 9, 1, 5};
for (int i = 0; i < 5; i++) {
    printf("%d ", arr[i]);
}

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6.6 Step 6 – Strings

Concepts:

• Character arrays
• String functions (strlen, strcpy, strcmp)

Example:

char name[20];
printf("Enter name: ");
scanf("%s", name);
printf("Hello %s", name);

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6.7 Step 7 – Pointers

Concepts:

• Address-of & and dereference *
• Pointer to variable, pointer to array

Example:

int x = 10;
int *p = &x;
printf("Value = %d, Address = %p", *p, p);

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6.8 Step 8 – Structures

Concepts:

• User-defined types
• Group related data like student, employee

Example:

struct Student {
    int roll;
    char name[20];
    float marks;
};

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6.9 Step 9 – File Handling

Concepts:

• fopen, fprintf, fscanf, fclose
• Create simple record-based projects

Example:

FILE *fp = fopen("data.txt", "w");
fprintf(fp, "Hello File");
fclose(fp);

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7️⃣ Sample Full Program – Pattern Printing

#include <stdio.h>

int main() {
    int n, i, j;
    printf("Enter number of rows: ");
    scanf("%d", &n);

    for(i = 1; i <= n; i++) {
        for(j = 1; j <= i; j++) {
            printf("* ");
        }
        printf("\n");
    }
    return 0;
}

🧠 Concepts: Nested loops, basic pattern 🎯 Use: Logical thinking & loop mastery

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8️⃣ Learning Outcomes

By following this repo step-by-step, you will:

• ✅ Understand all core concepts of C
• ✅ Be able to write & debug your own programs
• ✅ Be ready to move into DSA, C++, OS, Embedded
• ✅ Have a public GitHub portfolio of C codes

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9️⃣ Future Enhancements (Planned)

Feature	Status
💾 Input/Output screenshots for each program	⏳
📘 PDF notes topic-wise	🔜
🧪 DSA programs (sorting, searching, recursion)	🔜
🏆 Mini projects (billing system, student management)	🔜
📚 Assignment sheets with questions	🔜

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🔟 Tags / Skills

C • Programming • Logic Building • Beginner Friendly Pointers • Arrays • Structures • File Handling • Interview Prep

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📌 Concepts: Loop + Modulo Logic + Conditional Execution

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📂 Repository Structure

C-Programs/
 ├── 01_Basics/
 ├── 02_Conditional_Statements/
 ├── 03_Loops/
 ├── 04_Functions/
 ├── 05_Arrays/
 ├── 06_Strings/
 ├── 07_Pointers/
 ├── 08_Structures/
 ├── 09_FileHandling/
 └── README.md

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🎓 Learning Outcomes

After completing this repository, you will be able to:

⭐ Write efficient C programs ⭐ Break problems into logical steps ⭐ Use advanced concepts like pointers & structures ⭐ Build future skills like C++, DSA, OS, Embedded Systems

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🧪 Practice Challenges (Coming Soon)

Difficulty	Example Problem
Beginner	Factorial, Fibonacci, Patterns
Intermediate	Matrix Operations, Sorting, Searching
Advanced	File-based Projects, Mini Inventory System

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If you like this repository, please ⭐ Star it — Your support motivates continued growth!

Made with 💙 for Programming Learners

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