> For the complete documentation index, see [llms.txt](https://42-guide.gitbook.io/42-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://42-guide.gitbook.io/42-guide/piscine-life/c01.md).

# C01

In **C Piscine C01**, you'll continue developing your C programming skills by learning essential concepts like pointers, memory manipulation, and basic operations on arrays and strings. This module emphasizes hands-on problem-solving and solidifying your understanding of core programming fundamentals.

**What You'll Learn:**

* **Pointers and Multi-level Pointers**: How to use and manipulate pointers to store and retrieve data efficiently.
* **Basic Arithmetic Operations**: Implementing division, modulus, and swapping values.
* **Strings and Arrays**: Managing arrays and strings through reversing, sorting, and calculating lengths.
* **Standard Output**: Writing functions that interact with standard output using basic system calls.

**Projects in This Section:**

1. `ft_ft`: Modify values using a pointer.
2. `ft_ultimate_ft`: Work with multi-level pointers.
3. `ft_swap`: Swap values of two integers.
4. `ft_div_mod`: Compute division and modulus results.
5. `ft_ultimate_div_mod`: Modify division and modulus values using pointers.
6. `ft_putstr`: Display strings using standard output.
7. `ft_strlen`: Calculate the length of a string.
8. `ft_rev_int_tab`: Reverse an array of integers.
9. `ft_sort_int_tab`: Sort an array of integers in ascending order.


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