Beginner in C, help plese with

I'm trying to create a function, in 2 lines, that will read commands in a way that is not case sentient.

ex. If I type qUIt, it'll read it as quit.

I've agonized over this for hours and came up with

insert

Code:

---

for (i = 0; line[i] != '\0'; i++) {
      number = myString[i] - '0';
}

---

It doesn't work, but am I at least on the right path?
Any help will be very welcome, thanks!

In each iteration of the loop, you are storing something in the variable 'number' but on the next iteration you store something new there.

And how come you refer to your string as line[] in the head of the loop but as myString[] in the body?

Lastly, why are you subtracting the value of the digit '0' from things? What does zero have to do with upper and lower case?