ft_printf

Recode the libc’s printf function.

That project enable to discover variadic functions in C in a particularly relevant context as well as learn about a great example of a basic “dispatcher” in C via the use of an array of function’s pointers.

Improving skills:

Imperative programming

Unix

Algorithms & AI

Rigor

Installation

$ git clone https://github.com/Kugumi/ft_printf.git
$ cd ft_printf
$ make
$ gcc -Wall -Wextra -Werror main.c libftprintf.a

Usage

Change main.c with the following conversions and flags and compile again (gcc -Wall -Wextra -Werror main.c libftprintf.a)

Conversions


c	char (character).
s	null-terminated string.
p	void * (pointer to void) in an implementation-defined format.
d, i	int as a signed integer.
o	unsigned int in octal.
u	Print decimal unsigned int.
x, X	unsigned int as a hexadecimal number. x uses lower-case letters and X uses upper-case.
hh	For integer types, causes printf to expect an int-sized integer argument which was promoted from a char.
h	For integer types, causes printf to expect an int-sized integer argument which was promoted from a short.
l	For integer types, causes printf to expect a long-sized integer argument.
ll	For integer types, causes printf to expect a long long-sized integer argument.
f, lf, Lf	double in normal (fixed-point) notation. For floating point types, l has no effect. L for floating point types, causes printf to expect a long double argument.
%%	Prints a literal % character

Flags


#	Alternate form: For f type, the output always contains a decimal point. For o, x, X types, the text 0, 0x, 0X, respectively, is prepended to non-zero numbers.
0	When the 'width' option is specified, prepends zeros for numeric types.
-	Left-align the output of this placeholder. (The default is to right-align the output.)
+	Prepends a plus for positive signed-numeric types.
⌴ (space)	Prepends a space for positive signed-numeric types.

Manage the field-width and precision.