This project has been created as part of the 42 curriculum by ALisonCamelo.

ft_printf 🖨️

📌 Description

The ft_printf project involves re-coding C's standard printf() library function. The goal is to gain a deep understanding of variadic functions in C (stdarg.h), formatted string parsing, and efficient memory/buffer output management using low-level system calls.

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⚙️ Implemented Conversion Specifiers

Specifier	Description	Handled File
%c	Prints a single character.	ft_putchar.c
%s	Prints a string of characters (handles NULL).	ft_putstr.c
%p	Prints a void * pointer argument in hexadecimal format.	ft_putptr.c
%d	Prints a decimal (base 10) number.	ft_putnbr.c
%i	Prints an integer in base 10.	ft_putnbr.c
%u	Prints an unsigned decimal (base 10) number.	ft_putunbr.c
%x	Prints a number in lowercase hexadecimal (base 16).	ft_puthex.c
%X	Prints a number in uppercase hexadecimal (base 16).	ft_puthex.c
%%	Prints a literal percent sign.	ft_putchar.c

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🛠️ Instructions & Compilation

The project compiles into a static library libftprintf.a using the included Makefile.

Makefile Targets:

• make or make all: Compiles the source files and creates libftprintf.a.
• make clean: Removes all compiled object (.o) files.
• make fclean: Removes object files and the libftprintf.a library.
• make re: Recompiles the entire project from scratch.

How to use in your own C project:

1. Compile the library:

   make
   

2. Include the header in your C code:

#include "ft_printf.h" int main(void) { ft_printf("Hello %s! Address: %p | Hex: %x\n", "Alison", &main, 255); return (0); }

3. Compile your program with the library: Bash gcc -Wall -Wextra -Werror main.c -L. -lftprintf -o test_printf ./test_printf