42_ft_printf

Welcome! This repository contains my implementation of the C printf function as required by the 42 school curriculum. The goal of this project was to deeply understand formatted output in C, handle variadic functions, and manage memory and buffers efficiently. I focused on writing clean, modular, and standard-compliant code, closely following the project specifications.

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🚩 Project Overview

I developed a custom version of printf, called ft_printf, which replicates the essential features and behavior of the standard function as outlined in the 42 subject PDF. This includes support for common format specifiers (%d, %s, %c, %x, %p, %i, %u, %X, %%), flags, width, and precision handling.

Key Points

• Comprehensive Format Support: Handles all required specifiers, flags, width, and precision per the assignment.
• Modular Source Structure: Parsing, formatting, and output logic are separated for readability and maintainability.
• Performance and Safety: Variadic arguments and buffer management are implemented with care to avoid leaks and undefined behavior.
• Custom Libft Integration: Relies on my own C utility library (libft), as is standard for 42 projects.

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📁 Main Files and Structure (Partial)

• ft_printf.c, ft_print_*.c — Main implementation and helper modules
• libftprintf.h — Header with function prototypes and type definitions
• libft/ — Personal C library required by the project
• Makefile — Build system for compiling and testing

This is a partial listing. For the complete codebase, see the repository directory.

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🛠️ How to Use

1. Clone the repository:

   git clone https://github.com/artidek/42_ft_printf.git
   cd 42_ft_printf

2. Build the library:

   make

3. Include and use in your code:

   #include "libftprintf.h"
   
   int main(void) {
       ft_printf("Hello, 42! Score: %d\n", 100);
       return 0;
   }

   Link the generated library when compiling your project.

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🤝 Contributing

Feedback and suggestions are welcome. Please open an issue or submit a pull request if you have improvements or questions.

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⚖️ License

This code is shared for educational and personal use as part of the 42 school curriculum.

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