Update README.md (#6)

README.md

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+# C Language Programs
 
+This folder contains beginner-friendly C programs that demonstrate core concepts, written as part of my course practice.
+
+## File List
+
+1. **01_hello_world.c**  
+   - Prints "Hello, World!" to the screen.  
+   - First step into C programming.  
+
+2. **02_variables.c**  
+   - Demonstrates declaring variables and printing their values.  
+   - Example: integers, floats, characters.  
+
+3. **03_conditions.c**   
+   - Shows how to use `if`, `else`, and comparison operators.  
+
+4. **04_loops.c** 
+   - Examples of `for`, `while`, and `do-while` loops.  
+
+---
+
+## How to Compile & Run
+Using GCC:
+```bash
+gcc 01_hello_world.c -o hello
+./hello
+```
+
+Windows (Dev-C++ / TDM-GCC):
+```
+gcc 01_hello_world.c -o hello.exe
+hello.exe```