C Programming Mastery & Embedded Systems Foundation

A comprehensive repository containing foundational to advanced C Programming, modular architecture, data structures, and industry-style mini-projects designed for embedded systems and systems programming.

---

📂 Repository Architecture

C_Programming/
├── Arrays/                 # 1D/2D arrays, multidimensional arrays, matrix operations
├── Assignment/             # Industry-style modular software projects & exercises
│   ├── 1Darrays/           # Concatenation, duplicate removal, array splitting
│   ├── bitwise/            # Bit manipulation, masks, rotate shifts
│   ├── control_statemnts/  # Decision structures & logic
│   ├── functions/          # Multi-file mini-projects (Hospital, Hotel, Insurance, etc.)
│   ├── library/            # Static (.a) & dynamic (.so) library implementations
│   ├── Linked_List/        # Industrial Plant & Machine Management System
│   ├── pointers/           # Pointer arithmetic, transactions, array traversal
│   ├── strings/            # Custom string library functions (re-implementing string.h)
│   ├── structures/         # E-Commerce, Hospital, Library, School, Smart Home systems
│   └── Validation/         # Reusable defensive input validation engine
├── C_preprocessor/         # Macros, token pasting, conditional compilation (#ifdef)
├── Control_Statements/     # If-else ladders, switch-case, loops, patterns & pyramids
├── Files/                  # File streams (fopen, fread, fwrite, binary files)
├── Functions/              # Call semantics, recursion, modular decomposition
├── Input_Output/           # Standard streams, format specifiers, buffer handling
├── Operations_Bits/        # Low-level bitwise operations, masks, bit fields
├── Operators_expressions/  # Operator precedence, type conversions, evaluation order
├── Strings/                # Null-terminated strings, buffer safety, manipulation
├── library/                # Reusable static and dynamic math/calculator libraries
├── linked_lists/           # Singly, Doubly, and Circular Linked Lists implementations
├── makefile/               # Build automation, targets, dependency management
├── miscellaneous/          # Storage classes, command-line arguments, system calls
├── pointers/               # Pointers, double pointers, function pointers, dynamic memory
└── structure_union/        # Structures, padding, alignment, unions, bitfields

---

🛠️ Key Real-World Projects & Modules

🏭 Industrial Plant Management (Assignment/Linked_List)

• Console-based industrial monitoring system built with dynamic linked list structures.
• Tracks multi-plant hierarchies with child machine nodes.
• Dynamic node allocation and deallocation (malloc/free) with production count calculation.

🏥 Modular Application Suites (Assignment/functions/ & Assignment/structures/)

• Hospital Management System: Patient admission, triage tracking, diagnosis filtering, record deletion.
• Smart Home Control System: Device status toggling, load monitoring, power consumption analytics.
• E-Commerce Inventory Manager: Product cataloging, real-time stock deductions, valuation reports.
• School Grading & Evaluation: Grade averaging, top-performer rankings, mark updates.
• Insurance Policy Manager: Risk calculation, policy issuance, claim tracking.
• Traffic Light Simulation: State-machine cycle emulation with timing logic.

🛡️ Defensive Input Validation Engine (Assignment/Validation)

• Reusable shared library (.so/.a) for sanitizing user console input.
• Handles integers, floats, string length limits, contact numbers, and removes trailing newlines.

⚡ Low-Level & Embedded Fundamentals

• Bitwise Operations: N-th bit extraction, bit flipping, rotation, register masking.
• Pointers & Memory: Heap allocation, memory leaks prevention, function pointers for callbacks.
• Libraries & Makefiles: Automated multi-file compilation with header dependencies.

---

🚀 Build and Run

Single File Compilation:

gcc -Wall -Wextra -std=c11 pointers/exercise/1_ptr.c -o program.out
./program.out

Modular Projects with Make:

cd Assignment/structures/Smart_Home_System
make
./build/app