Because ft_putnbr() and `ft_putstr() aren’t enough.

A custom implementation of the C library function printf() in C.

Grade: 100/100

This implementation supports the following conversion specifications:

• %c - Single character
• %s - String of characters
• %p - Pointer address
• %d and %i - Signed decimal integer
• %u - Unsigned decimal integer
• %x and %X - Unsigned hexadecimal integer (lowercase and uppercase respectively)
• %% - Literal % character

This implementation can be used in the same way as printf().

#include "ft_printf.h"

int main(void) {
    ft_printf("This is a string: %s\n", "Hello, World!");
    ft_printf("This is a number: %d\n", 42);
    return 0;
}

The ft_printf() function takes a string as its first argument and additional arguments as required by the conversion specifications in the string.

The function uses the va_start(), va_arg() and va_end() macros to handle the variable argument list. The ft_parseargs() function takes a character representing the conversion specification and the va_list as arguments, and returns the number of characters written to standard output.

The supported conversion specifications are processed through functions such as ft_putchar(), ft_putstr() and ft_putptr() that write the output to standard output.