ft_printf

Summary

For the ft_printf project of the 42 school cursus, we must recreate the famous C library printf function. This project teaches us about variadic arguments as well as structures if we plan to implement printf's extra flags.

Getting started

First, clone this repository and cd into it:

$ git clone https://github.com/riceset/printf; cd ft_printf

Compile the library with:

$ make

Basic Usage

For example, let's create a main.c file.

// Include the header
#include "ft_printf.h"

int main(void)
{
      // Call the function
      ft_printf("Hello %d!", 1);
      return (0);
}

Compile the main.c file with the ft_printf library and run the program:

gcc main.c libftprintf.a && ./a.out

Output should be:

Hello 1!

Caveats

This version of printf() only supports the following conversions:

Specifiers
Format Specifier	Description
%	% followed by another % character writes % to the screen.
c	writes a single character.
s	writes a character string.
p	writes an implementation-defined character sequence defining a pointer address.
d or i	writes a signed integer to decimal representation.
u	writes an unsigned integer to decimal representation.
x or X	writes an unsigned integer to hexadecimal representation.