Hive - ft_printf
Because I’m tired of using putnbr and putstr
Grade:
In this project I recoded the printf function. It creates a libftprintf.a library once compiled using:
make
It works with the following flags:
%c : prints an ascii character
%p : prints the memory address of the argument
%s : prints a string
%d : prints a number
%i : same as d
%u : prints unsigned int
%o : prints the number in octal (base 8)
%x : prints the number in hexadecimal (base 16) with small letters
%X : same as x but with big letters
%f : prints floats
%% : prints %
See subject for more details.
Bonuses
%b : prints the number in binary (base 2)
%a : prints a NULL-terminated 2d array (char**)
It has functionality for precision (e.g %.3s) and field-width (e.g %3s). Width and precision work with * also (e.g "%.*s", 3)
My ft_printf works with the following length flags:
| Flags | d, i | o, u, x, X | f | a (bonus) |
|---|---|---|---|---|
| h | short | unsigned short | ||
| hh | signed char | unsigned char | print strings on the same line | |
| l | long | unsigned long | double | |
| ll | long long | unsigned long long | ||
| z | size_t | size_t | ||
| L | long double |
It works also with the following flags:
# for o, x, X, b: value is preceeded with 0, 0x, 0X, 0b
- : left-justify the field width
+ : forces to precede with + or -
0 : left-pads the field width with zeroes instead of spaces.
[space] : If no sign is going to be written, insert blank before the number
Other bonuses
Colours: see ft_printf.h for full list of colours, but they can be used in the following way
ft_printf(RED BG_BLACK "This string is in red\n" RESET );
You can also insert colours in the middle using %s:
ft_printf("%sThis is red, %sThis is blue\n" RESET, RED, BLUE );
Change the file descriptor that ft_printf prints to and can be used as such (similar to fprintf):
ft_fprintf(fd, "This string goes to different fd!\n");
Some issues: %f flag doesn't work with some floats with high precision (over 20), but should work with almost every. The function isn't super fast compared to the original printf as I did it with a complicated struct and not in bitwise.