FT_PRINTF

The goal of this project is pretty straightforward. It's a recode of printf(). It's the first encounter with variadic functions in C, used to make functions with variable number of arguments.

• Mandatory Part - Recode printf() function from libc with "cspdiuxX%" flags.
• Bonus Part - Manage any combination of the flags "-0." and the field minimum width under all conversions and all the "# +" flags (one of them is a space).
• How to Use - How to use and compile with the project's static library.
• References - References to understand and learn more about the project.

Mandatory Part

Basically, the goal is mimic the libc printf() behavior. Here are the requirements:

• No buffer management
• Handle the following flags: cspdiuxX%.
• ft_printf() should behave as the original printf().

Here is a table with the specifier characters:

Placeholder	Description
%c	Prints a single character.
%s	Prints a string (as defined by the common C convention.
%p	The void * pointer argument has to be printed in hexadecimal format.
%d or %i	Prints a decimal (base 10) number.
%u	Prints an unsigned decimal (base 10) number.
%x	Prints a number in hexadecimal (base 16) lowercase format.
%X	Prints a number in hexadecimal (base 16) uppercase format.
%%	Prints a percent sign.

Bonus Part

Implements Adicional flags:

Flags	Description
-	Left-justify within the given field width.
+	Forces to preceed the result with a plus sign.
0	Left-pads the number with zeroes (0) instead of spaces.
#	Used to print an hexadecimal number with 0x.
(space)	A blank space before the value.

And some field width flags

Flags	Description
number	Minimum number of characters to be printed
.*	Integers: minimum number of digits to be written.

How to Use

• Clone the repo:

 [email protected]:silvatom/ft_printf.git
 cd ft_printf/
 make

make command will create a static library called libftprintf.a

• Use this main.c example:

#include  "libftprintf.h"

int  main(void)
{
	ft_printf("Hello, world!\n");

	return (0);
}

• Compilation line: (currently working directory being ./ft_printf)

cc main.c -I includes/ -lftprintf -L. -o bin
./bin

• Use this string pattern to test any format specifier:

%[flags][width][.precision][length]specifier

References

• C++ printf reference
• Secrets of printf