_printf!

This Repository contains all the functions needed to make _printf() work. This function is capable of handling multiple kind of input if we specify it correctly.

Files

_printf.c - contains the _printf() function and the code structure.

functions.c - contains the basic functions called by the printf

print_normal - print the input character by character
print_c - prints the character given , as an ASCII value (char)
print_s - print the input specified as a string (char*)
print_d - print the input as an integer
print_mod - prints a % character

Adv_functions.c - contains specific functions for advanced format specifiers

print_rev - prints the string given in reverse
print_rot - print the string given in ROT13
print_bin - prints the integer in binary
prints_hex - prints the integer given in hexadecimal lowercase
prints_heX - prints the integer given in hexadecimal in UPPERCASE

Aux_functions/ - contains auxiliary functions that are called in the previous described functions

• 8-rot13.c - Encode the string into rot 13
• _strdup.c - copies a string to a new memory location
• _strlen.c - returns the length of the string
• rec_pd.c - recursive function called by the print_d function
• rec_bin.c - recursive function called by the print_b function
• rec_hex.c - recursive function called by the print_hex and print_heX functions. This two functions switch by a flag operator passed to the rec_hex function
• aux_fun.h - header file containing the prototypes of the actual directory

holberton.h - header file containing all the prototype functions described previously, the standard libraries used and the typedef struct created for _printf.c.

man_3_printf - manpage for the usage of _printf.

Parameters

int _printf( const char * format, ... );

The Format specifier "%" should be added before the character parameters the argument passed to the function.

Format Specifier	Output	Example
c	Character	A
s	String of characters	Holberton
i and d	Signed decimal integer	98
%	A % followed by another % character will write a single % to the stream	%
b	Unsigned binary	10101
x	Unsigned hexadecimal integer (lowercase)	36264eb
X	Unsigned hexadecimal integer (uppercase)	36264EB
r	Reversed string	notrebloH
R	Rot13 string	cevags

Return Value.

On success, the total number of characters written is returned. If an error occurs, a negative number is returned.

How to use

Compilation All the *.c files need to be compiled along with the main.c you are using. The compiler used to compile and check all the files was gcc 4.8.4 on Ubuntu 14.04 LTS with the flags -Wall Werror -Wextra and -pedantic.

Run this command on your terminal to compile the files

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

Example

In function main.c testing the use of _printf() function

#include "holberton.h" 
/** 
 * main - main function of program 
 * Return: always 0 
 */ 
int main(void)
{ 
	char *str;
	  
	str = "Holberton"; 
	_printf("%s\n", str);
	return (0);
}

---!> Output

linux>$  gcc -Wall -Werror -Wextra -pedantic *.c
linux>$  ./a.out
Holberton
linux>$

Contributors

• Diego Varela
• Raimundo Gallino