ℹ️ Because ft_putnbr() and ft_putstr() aren’t enough
100/100 ✅
This project consists of a static library that contains ft_printf - a function that mimics the real printf.
This functionality proves particularly advantageous when comparing it to its predecessor at 42, the system call write.
One of the significant advantages of ft_printf is its adaptability and reusability. It can be seamlessly integrated into future projects, streamlining the process of formatting and outputting data.
⚠️ Warning: Don't copy/paste code you don't understand: it's bad for you, and for the school.
✨ For this project we were introduced to the concept of variadic functions ✨
The functionality of ft_printf is based on the concept of variadic functions, which allows it to handle a variable number of arguments. This project involves creating a function that emulates the behavior of the widely-used printf function in the C language.
In essence, ft_printf takes a string as its primary argument, and this string can contain placeholders, such as %c for characters or %s for strings. The actual values to be substituted into these placeholders are passed as additional arguments to the function. The function's return value is the number of characters printed, or -1 in the case of an error.
To implement a function like this, it needs to be variadic, meaning it accepts a variable number of arguments. This is achieved through the use of the <stdarg.h> header and specific parameters like va_arg to access the arguments in order, va_start to begin using the argument list, and va_end to conclude it.
For each type of conversion specified in the project requirements, there's a corresponding function within ft_printf that converts the argument and returns the number of bytes written:
• %c print a single character.
• %s print a string of characters.
• %p The void * pointer argument is printed in hexadecimal.
• %d print a decimal (base 10) number.
• %i print an integer in base 10.
• %u print an unsigned decimal (base 10) number.
• %x print a number in hexadecimal (base 16).
• %% print a percent sign.
At 42 School, aligning to the 42 Norms, the school's coding standard, is a fundamental expectation for all projects.