ft_printf

Description

ft_printf is a custom implementation of the standard C library function printf. This project is part of the 42 curriculum and aims to develop a better understanding of how formatted output works in C. The project requires implementing a function that produces output according to a specified format string, with support for various format specifiers.

Features

Support for basic format specifiers (%c, %s, %d, %i, %u, %x, %X, etc.)
Implementation of optional flags, width, and precision for formatting.
Handle of the following conversion types:
- %c: Character
- %s: String
- %d / %i: Signed integer
- %u: Unsigned integer
- %x / %X: Unsigned hexadecimal (lowercase / uppercase)
- %p: Pointer address
- %%: Literal percent sign

Objective

The goal of this project is to:

Implement a minimalistic printf function from scratch.
Work with variadic functions to handle a variable number of arguments.
Explore how format specifiers and formatting options are handled in the C language.

Getting Started

Prerequisites

Basic knowledge of C programming and memory management.
A working installation of a C compiler (e.g., GCC or Clang).

Installation

Clone the repository:

git clone https://github.com/iaceene/ft_printf.git
cd ft_printf

Compile the program using Makefile (if provided):

  make

Usage

Once the project is compiled, you can use the ft_printf function in your C programs by including the header file:

#include "ft_printf.h"
You can then call the function in a similar way to printf, but using your own custom implementation:

ft_printf("Hello, %s!\n", "world");
ft_printf("Hex: %x\n", 255);
ft_printf("Pointer: %p\n", &some_variable);

Example

#include "ft_printf.h"

int main(void) {
    ft_printf("Character: %c\n", 'A');
    ft_printf("String: %s\n", "Hello, World!");
    ft_printf("Decimal: %d\n", 123);
    ft_printf("Hexadecimal: %x\n", 255);
    return 0;
}

Output:

Character: A
String: Hello, World!
Decimal: 123
Hexadecimal: ff