ft_printf

42cursus' project #3

This project is pretty straightforward, you have to recode printf. You will learn what is and how to implement variadic functions. Once you validate it, you will reuse this function in your future projects. The printf function is one of the most versatile and well-known functions in the C language. From a testing aid to tabulation method, printf is a very powerful and important tool in every dev's kit. This project aims to recreate the behaviour of the original MacOS's printf, including its basic error management, some of its flags, minimum field width stipulation and most of its basic conversions.

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Mandatory

A small description of the required conversion:

• %c print a single character.
• %s print a string of characters.
• %p The void * pointer argument is printed in hexadecimal.
• %d print a decimal (base 10) number.
• %i print an integer in base 10.
• %u print an unsigned decimal (base 10) number.
• %x print a number in hexadecimal (base 16).
• %% print a percent sign.

The project

Implementation files

• Makefile
• libft functions
• header file

Main

• ft_printf.c

Conversion functions

• ft_printf_ch_str.c
• ft_printf_ptr_int.c
• ft_printf_uns_per.c
• ft_printf_x_X.c

Conversions & Flags & Expected Order

Conversion	Description	Project
c	Single ascii character	Mandatory
s	String of characters NULL terminated	Mandatory
p	Pointer location converted to hexadecimal value	Mandatory
d	Decimal number	Mandatory
i	Integer in decimal base	Mandatory
u	Unsigned integer in decimal base	Mandatory
x	Unsigned number printed in lowercase hexadecimal base	Mandatory
X	Unsigned number printed in uppercase hexadecimal base	Mandatory
%	The '%' ascii character	Mandatory
o	Unsigned number printed in octal base	Extra

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Usage

Requirements

ft_printf requires a gcc compiler and some standard libraries.

Instructions

Clone this repository in your local computer:

$> git clone https://github.com/spnzed/ft_printf.git

In your local repository, run make

$> make 

make suports 6 flags:

• make all or simply make compiles printf in its mandatory format
• make clean deletes the .o files generated during compilation
• make fclean deletes the .o and the libftprintf.a library file generated
• make re executes fclean and all in sequence, recompiling the library

To use the libftprintf in your code you will need to include the header:

#include "ft_printf.h"