Printf()

This printf project was done during the Full Stack Software Engineering program at ALX-Africa. The function named "_printf" imitates the actual "printf" command located in the stdio.h library. It contains some of the basic features and functions found in the manual 3 of "printf".

_printf() is a function that performs formatted output conversion and print data. Its prototype is the following:

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

Where format contains the string that is printed. The _printf() is variadic function, it can receive n arguments that get replaced by corresponding tag specifiers respectively.

The format tag prototype is as follows:

%[flags][length]specifier

If the program runs successfully, the return value is the amount of chars printed (excluding the null byte used to end output to strings)

Specifier	Output
c	Character
d or i	Signed decimal integer
s	String of characters
b	Signed binary
o	Signed octal
u	Unsigned integer
x	Unsigned hexadecimal
X	Unsigned hexadecimal (uppercase)
p	Pointer address
S	String with special chars replaced by their ASCII value
%	Character

Examples

Printing the string of chars "Hello, Holberton":
- Usage: _printf("Hello Hol%s.", "berton");
- Output: Hello Holberton.
Printing an integer number:
- Usage: _printf("10 + 10 is equal to %d.", (10 + 10));
- Output: 10 + 10 is equal to 20.
Printing a binary, octal and hexadecimal:
- Usage: _printf("10 in binary is [%b], in octal is [%o] and in hexadecimal is [%x]", 10, 10, 10);
- Output: 10 in binary is [1010], in octal is [12] and in hexadecimal is [A]

File Functions

_printf.c

Performs Formatted Output Conversion And Prints the Data.

main.h

Header file where all function and structure prototypes are saved

select_format.c

Function pointer that calls a particular function for any valid specifier

base_conversion.c

Contains functions that converts any given number to any desired base

/* Specifier : %b(decimal to binary) or %o(decimal to octa) or %x(decimal to lowercase hexadecimal) or %X(decimal to UPPERCASE hexadecimal) */

printChar.c

Function that writes character to STDOUT

/* Specifier : %c */

printStr.c

Contain functions that prints strings of characters to the STDOUT and another function that Prints A String And ASCII Values Of Non-Printed Chars to STDOUT.

/* Specifier : %s or %S(ASCII values for non-print chars) */

printint.c

Prints an integer to stdout

/* Indetifier : %i or %d */

printUint.c

Prints unsigned int to stdout

/* Indetifier : %u */

Austinuc/printf