ft_printf

ft_printf is a project at 42 that aims to recreate the functionality of the printf function from the standard C library and learn about variadic functions.

Getting Started

To use this function, you need to clone this repository and compile it with make. This will generate a libftprintf.a file that you can link with your own source files.

The prototype of the function is:

int ft_printf(const char *, ...);

The function takes a format string that can contain zero or more directives. Directives are introduced by a % character and end with a conversion specifier. The function writes the output to the standard output.

Specifiers and Flags

The function supports the following conversion specifiers:

• %c : print a single character
• %s : print a string of characters
• %p : print a pointer address
• %d : print a decimal integer
• %i : print an integer
• %u : print an unsigned decimal integer
• %x : print an unsigned hexadecimal integer (lowercase)
• %X : print an unsigned hexadecimal integer (uppercase)
• %% : print a percent sign

The function also supports the following flags:

• - : left-justify within the given field width
• 0 : left-pads the number with zeroes instead of spaces
• . : precision, specifies the number of digits after the decimal point for floating-point values, or the maximum number of characters to be printed from a string
• # : used with x or X specifiers, it prefixes 0x or 0X to non-zero values
• (space) : used with d or i specifiers, it inserts a space before non-negative numbers
• + : used with d or i specifiers, it forces to precede the result with a plus or minus sign

Usage

To use this function in your own project, you need to include the header file ft_printf.h in your source files and link the libftprintf.a file when compiling.