0x11. C - printf

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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)

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Introduction

Project in which the operation of the printf (_printf) is simulated, which receives string, single char, integer, decimals, and the character percentage (%)

Documentation

To use this function that simulates the printf, you must clone the repository [printf](https://github.com/ch-canaza/printf) to the repository where you are working, and you must include the contents of the folder holberton.h in your folder.h

Extra information

What’s Included?

file	description
_printf.c	simulates original printf
_putchar.c	simulates original putchar
_printf_function.c	contains functions for the printf
holberton.h	contains prototypes and libraries

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Compilation

Your code will be compiled this way: gcc -Wall -Wextra -Werror -pedantic -Wno-format *.c

• As a consequence, be careful not to push any c file containing a main function in the root directory of * * your project (you could have a test folder containing all your tests files including main functions)
• Our main files will include your main header file (holberton.h): #include holberton.h
• You might want to look at the gcc flag -Wno-format when testing with your _printf and the standard printf.

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

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)
• write output to stdout, the standard output stream
• format is a character string. The format string is composed of zero or more directives. See man 3 printf
• for more detail. 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
• You don’t have to handle field width
• You don’t have to handle precision
• You don’t have to handle the 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
• You don’t have to handle field width
• You don’t have to handle precision
• You don’t have to handle the length modifiers

2. Just because it's in print doesn't mean it's the gospel

Create a man page for your function.

Contact 💬

Ricardo Camayo

| twitter | linkedin | mail | github |

Christian Nazareno

| twitter | linkedin | mail | github |