PRINTF FUNCTION

This is a a custmom version of the printf fuction, which have the most basic functionalities such as printing a string, a character and also printing an integer number.

DESCRIPTION

The printf project is a program that is going to print a variety of characters and numbers .

and return the number of characters it is going to print, in the case of a char will be just one.

HOW DOES IT WORK

Using a composite data type such as struct which will contain the declaration of a char pointer *fmt and a pointer to a function called *func, this will be receiving a type val_list which will be the list of arguments from format, that will be printed in case there is a match between the struct first argument (fmt) and the format.

So the format is a string which characters will be printed without modification (literally), until the string found the format specifiers which start with the % character, and when there is a match between the specifier in the struct and in the format it will indicate the location to the function and this function will print out the string, character or Number, depends the function.

So this is an example of a struct that will call different functions for printing: char, string and numbers depending the match.

This is example of the string format with the specifiers and the arguments as well.

Len is going to be the the number of characters the function _printf is going to print out.

This will be the output:

We use different functions in order to split the work. We use different functions; for example a function for getting the match between the format and the struct, functions for printing out the string, for printing out a char and a number.

Example of the function that match the characters

This is the function that finds the match between the char ("c","s","d","i", "%") in struct st_format and the format string. and also if there is not match it will print the % and the next character that is different to the ones in the struct

HOW TO DOWNLOADED

you can go to the clone or downloaded green botton and copy the link that it will provided

or use directly this link:

https://github.com/Bhalut/printf.git

Go to you terminal and type

git clone [link you just copied]

then you will have the repository in your computer

Once you do that you can use this main template and fallow the instructions for compilation

Compilation And example of running the function

Your code will be compiled this way:

gcc -Wall -Werror -Wextra -pedantic *.c

This is a main you can use to tested out the _ptrintf function

    #include <limits.h>
    #include <stdio.h>
    #include "holberton.h"

    /**
     * main - Entry point
     *
     * Return: Always 0
     */
    int main(void)
    {
        int len;
        int len2;
        unsigned int ui;
        void *addr;

        len = _printf("Let's try to printf a simple sentence.\n");
        len2 = printf("Let's try to printf a simple sentence.\n");
        ui = (unsigned int)INT_MAX + 1024;
        _printf("Length:[%d, %i]\n", len, len);
        printf("Length:[%d, %i]\n", len2, len2);
        _printf("Negative:[%d]\n", -762534);
        printf("Negative:[%d]\n", -762534);
        _printf("Character:[%c]\n", 'H');
        printf("Character:[%c]\n", 'H');
        _printf("String:[%s]\n", "I am a string !");
        printf("String:[%s]\n", "I am a string !");
        len = _printf("Percent:[%%]\n");
        len2 = printf("Percent:[%%]\n");
        _printf("Len:[%d]\n", len);
        printf("Len:[%d]\n", len2);
        _printf("Unknown:[%r]\n");
        printf("Unknown:[%r]\n");
        return (0);
    }

compile and run the executable

    user@ubuntu:~/c/printf$ gcc -Wall -Wextra -Werror -pedantic -Wno-format *.c
    user@ubuntu:~/c/printf$ ./printf
    Let's try to printf a simple sentence.
    Let's try to printf a simple sentence.
    Length:[39, 39]
    Length:[39, 39]
    Negative:[-762534]
    Negative:[-762534]
    Character:[H]
    Character:[H]
    String:[I am a string !]
    String:[I am a string !]
    Percent:[%]
    Percent:[%]
    Len:[12]
    Len:[12]
    Unknown:[%r]
    Unknown:[%r]
    user@ubuntu:~/c/printf$

You can open a man page and get more information about it.

user@ubuntu:~/c/printf$ **man ./man_3_printf**

AUTHORS

Erika Osorio Gerrero and Abdel Mejia

LICENSE

This project is licensed under the MIT License - see the LICENSE.md file for details

Bhalut / printf