Project Title: Printf

Project was done in team of 2 people (Paschal Ugwu and Amarachi Nnanta)

Description

This project aims to implement a simplified version of the printf function in C. The _printf function will take a format string and optional arguments, and produce output according to the given format.

Requirements

General

• Allowed editors: vi, vim, emacs
• All files will be compiled on Ubuntu 20.04 LTS using gcc, with the options -Wall -Werror -Wextra -pedantic -std=gnu89
• All files should end with a new line
• A README.md file, at the root of the project folder, is mandatory
• The code should follow the Betty style, which will be checked using betty-style.pl and betty-doc.pl
• Global variables are not allowed
• Each file should contain no more than 5 functions
• The main.c files provided in the examples can be used for testing purposes, but they don't need to be pushed to the repository (they won't be taken into account during evaluation)
• The prototypes of all functions should be included in the header file main.h
• The header files should be include guarded
• The _putchar function will not be provided for this project

GitHub

• There should be one project repository per group. Other members should not fork or clone the project to ensure only one team member has the repository in their GitHub account. Otherwise, the team risks scoring 0%.

More Info

Authorized functions and macros

• write (man 2 write)
• malloc (man 3 malloc)
• free (man 3 free)
• va_start (man 3 va_start)
• va_end (man 3 va_end)
• va_copy (man 3 va_copy)
• va_arg (man 3 va_arg)

Compilation

The code will be compiled using the following command: $ gcc -Wall -Werror -Wextra -pedantic -std=gnu89 *.c Please note the following:

• Do not push any C file containing a main function in the root directory of your project. You can have a separate test folder for all your test files, including the files with main functions.
• The main files provided by us will include your main header file ( main.h ) using the following line: #include main.h
• When testing with your _printf and the standard printf , you might want to look at the gcc flag -Wno-format .

To compile and run the test file: $ gcc -Wall -Wextra -Werror -pedantic -std=gnu89 -Wno-format *.c $ ./printf We strongly encourage you to work together as a team to create a comprehensive set of tests. If the task does not specify what to do with an edge case, follow the behavior of the standard printf function.

Tasks

0. I'm not going anywhere. You can print that wherever you want to. I'm here and I'm a Spur for life

Write a function that produces output according to a format.

• Prototype: int _printf(const char *format, ...);
• Returns: the number of characters printed (excluding the null byte used to end output to strings)
• Writes output to stdout , the standard output stream
• The format string is composed of zero or more directives. See man 3 printf for more details. You need to handle the following conversion specifiers:
  • c
  • s
  • %
• You don't have to reproduce the buffer handling of the C library printf function
• You don't have to handle the flag characters, field width, precision, or length modifiers

1. Education is when you read the fine print. Experience is what you get if you don't

Handle the following conversion specifiers:

• d
• i
• You don't have to handle the flag characters, field width, precision, or length modifiers

Repository

• GitHub repository: printf