_printf

This project is about creating a simplified version of the printf function in C. The _printf function is a custom implementation of the C programming language's printf function, which is part of the standard library. The function is variadic, meaning it accepts a variable number of arguments.

Authorized functions and macros

The following functions and macros are used in this project:

• 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 is compiled this way:

gcc -Wall -Werror -Wextra -pedantic -std=gnu89 *.c

Usage

The _printf function can be used similarly to the printf function. It takes a format string and a variable number of arguments, and writes the output to stdout (the standard output stream).

Here is a basic usage example:

#include "main.h"

int main(void)
{
    _printf("Hello, world!\n");
    return (0);
}

Format Specifiers

The _printf function supports the following format specifiers:

• %c: Character
• %s: String of characters
• %d or %i: Signed decimal integer
• %b: Unsigned binary
• %u: Unsigned decimal integer
• %o: Unsigned octal
• %x: Unsigned hexadecimal integer (lowercase)
• %X: Unsigned hexadecimal integer (uppercase)
• %S: Custom conversion specifier, prints the string. Non printable characters (0 < ASCII value < 32 or >= 127) are printed this way: \x, followed by the ASCII code value in hexadecimal (upper case - always 2 characters)
• %p: Pointer address
• %r: Custom conversion specifier, prints the reversed string
• %R: Custom conversion specifier, prints the Rot13'ed string

Authors

This project is a collaboration between : Oumaima NAANAA & Zidane ZAOUI

More Projects

Simple Shell

ALX Time Saver

ALX Planning Tracker

Monty Language Interpreter