https://github.com/whoismtrx/42_ft_printf
ft_printf a project in 42 curriculum, we reimplement the printf function in C.
https://github.com/whoismtrx/42_ft_printf
1337 1337cursus 1337school 42 42born2code 42cursus 42projects 42school c clan clanguage ftprintf ftprintf42 printf
Last synced: 12 months ago
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ft_printf a project in 42 curriculum, we reimplement the printf function in C.
- Host: GitHub
- URL: https://github.com/whoismtrx/42_ft_printf
- Owner: whoismtrx
- Created: 2021-12-24T09:57:22.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2024-03-24T15:40:41.000Z (almost 2 years ago)
- Last Synced: 2025-02-13T06:17:09.498Z (about 1 year ago)
- Topics: 1337, 1337cursus, 1337school, 42, 42born2code, 42cursus, 42projects, 42school, c, clan, clanguage, ftprintf, ftprintf42, printf
- Language: C
- Homepage:
- Size: 1.55 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# ft_printf
## Overview
ft_printf is a project at 42 that aims to mimic the behavior of the original printf function. The project is written in C and is a part of the curriculum at 42. it's a great project to learn about variadic functions and how to parse and format strings.
## Key Features
The project contains 2 parts: `Mandatory` and `Bonus`. you need also create a `Makefile` to compile the project.
- `Mandatory` part is about implementing wihtout buufering the basic functionality of the printf function like conversion specifiers: `cspdiuxX%` and return the number of printed characters.
- `Bonus` part is about implementing the following conversion flags and manage with them all: `#0-+. ` yes the last character is a space.
## Getting Started
to compile the project you need to clone the repository first, to do that run the following command:
```
git clone https://github.com/whoismtrx/42_ft_printf.git ft_printf
cd ft_printf
make
```
## Usage
to use the ft_printf function you need to include the header file in your project:
```
// example.c
#include "ft_printf.h"
```
```
cc example.c libftprintf.a -o example
```
## Implementation
ft_printf function supports the following conversion specifiers, width and flags:
- `specifiers`:
- `%` : print a `%` character.
- `c` : print a character.
- `s` : print a string.
- `p` : print a pointer address.
- `d` : print a decimal number.
- `i` : print an integer.
- `u` : print an unsigned integer.
- `x` : print a hexadecimal number in lowercase.
- `X` : print a hexadecimal number in uppercase.
- `width`:
- `number` : set the width to the number.
- `flags`:
- `#` : print the number in an alternative format.
- `0` : print the number with leading zeros.
- `-` : left-justify the number.
- `+` : print the number with a sign.
- `.` : print the number with a precision.
- `space` : print the number with a space if no sign is printed.
## Resources
you can find some resources about the project in the following links:
- `variadic functions`: this is a great video about [variadic functions](https://www.youtube.com/watch?v=oDC208zvsdg&t=5s&ab_channel=CodeVault) and how to use them in C.
- `printf`: this is a great article about [printf](https://docs.oracle.com/cd/E26502_01/html/E28556/gkxbc.html), also you can read this pdf [Secrets of printf](https://inst.eecs.berkeley.edu/~cs61c/fa19/hw/hw2/printf_colton.pdf) to understand how printf works.