The float precision really bugs me

So, I am still going through the beginner courses, and I watched to video when you were talking about floats, namely when you were talking about this line in python:

>>> 0.1 + 0.1 + 0.1 - 0.3
5.551115123125783e-17

And it returns a number close to 0, but not equal to 0. Why does this happen? Why? Ruby (irb) and Lua return the exact same number. Are these scripting languages flawed at properly handling float operations? Or maybe this has to be due to the fundamental way the CPU instructions handle floats on x86-based systems. I'd like to know how ARM or MIPS systems would handle these kind of things.

When doing a conversion with printf() in C, I get more correct results:

#include <stdio.h>
// test.c

int main()
{
    printf("%f", 0.1 + 0.1 + 0.1 - 0.3);
    return(0);
}

I compiled with:

gcc test.c

And it gave me 0.00000

So I guess what I'm asking is does that make C or printf a better way to handle floating point numbers? I don't know of another way to print raw number with C but... I still think this kind of behavior should be corrected. I don't like programming languages that allow flaws like this.