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# C04

Welcome to the **C Piscine - C 04** subject! This unit is designed to help you strengthen your foundational skills in C programming, with a focus on **string manipulation**, **number handling**, and **base conversions**. The exercises in this subject will challenge you to write efficient and clean code while adhering to strict coding standards.

**Key Topics Covered:**

1. **String Functions**:
   * Counting characters in a string (`ft_strlen`).
   * Displaying strings to the standard output (`ft_putstr`).
   * Converting strings to integers (`ft_atoi`).
2. **Number Functions**:
   * Displaying integers (`ft_putnbr`).
   * Displaying numbers in different base systems (`ft_putnbr_base`).
   * Converting strings in specific bases to integers (`ft_atoi_base`).
3. **Input/Output**:
   * Using the `write` function to display output.
   * Handling edge cases and invalid inputs.
4. **Coding Standards**:
   * Adhering to the **norminette** guidelines for code formatting and structure.
   * Writing clean, readable, and efficient code.

**Why This Subject Matters:**

* **String Manipulation**: Strings are fundamental in programming, and understanding how to work with them is crucial for tasks like parsing input, processing text, and more.
* **Number Handling**: Working with numbers, especially in different bases, is essential for low-level programming, data representation, and algorithm design.
* **Coding Standards**: Writing code that adheres to strict standards ensures readability, maintainability, and compatibility with automated grading tools like **Moulinette**.

**Tools You’ll Use:**

* **Moulinette**: An automated grading system that checks your code for correctness and adherence to the norm.
* **Norminette**: A tool that enforces coding standards, ensuring your code is clean and well-formatted.

**How to Approach This Subject:**

1. **Read the Instructions Carefully**: Each exercise has specific requirements. Make sure you understand them before starting.
2. **Test Your Code**: Use test cases to ensure your functions handle all edge cases (e.g., empty strings, negative numbers, invalid inputs).
3. **Follow the Norm**: Run your code through **norminette** to ensure it meets the required standards.
4. **Ask for Help**: If you’re stuck, don’t hesitate to ask your peers or refer to online resources.


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