ft_printf

Introduction

ft_printf is a custom implementation of the standard printf() function in C. The goal of this project is to understand variadic functions and efficient formatted output handling. By developing ft_printf, we gain insight into low-level input/output operations, format specifiers, and argument parsing.

Once completed, ft_printf can be added to libft and used in other C projects.

Features

• Supports a subset of printf() functionalities.
• Handles multiple format specifiers.
• Implements variadic function handling.
• Creates a static library libftprintf.a.
• Proper memory management to prevent leaks.

Supported Format Specifiers

• %c – Prints a single character.
• %s – Prints a string.
• %p – Prints a pointer address in hexadecimal.
• %d – Prints a decimal (base 10) number.
• %i – Prints an integer in base 10.
• %u – Prints an unsigned decimal (base 10) number.
• %x – Prints a number in lowercase hexadecimal (base 16).
• %X – Prints a number in uppercase hexadecimal (base 16).
• %% – Prints a percent sign.

Usage

Compilation

To compile ft_printf as a static library, use the provided Makefile:

make

This will generate libftprintf.a.

Linking with Other Projects

To use ft_printf in other C programs, compile it and link the library:

gcc main.c -L. -lftprintf -o my_program

Example Usage

#include "ft_printf.h"

int main() {
    ft_printf("Hello, %s!\n", "world");
    ft_printf("Decimal: %d, Hex: %x\n", 42, 42);
    return 0;
}

Makefile Targets

• make: Compile ft_printf.
• make clean: Remove object files.
• make fclean: Remove executables and object files.
• make re: Recompile everything.