An experienced programmer would likely see what we're trying to do and think of
regular expressions because replacing non-alphanumeric characters with spaces is
trivial using regular expressions. In fact, we could replace a lot of the things
we're doing in this tutorial with code that has already been written by experts,
including functions in the standard library such as toupper and strcmp. In fact,
if I were tasked to write a program that counts the number of times a word shows
up in a document, I would have used a lot more external code.

Given that experts have written highly optimized code that will beat anything
we'll cover in this tutorial, why are we reinventing wheels left and right if
we're not even going to be using them in practice?

Put simply, you have to have something round and roll it on the ground before
you can understand a wheel.

You might be expected to solve the integral  manually in a Calculus class, but
in any other class, you would look it up. At this part of the tutorial, we're
not concerned with writing industry-grade code, we're just applying what we've
already covered about C into making a non-trivial program.

In general, you'll find that when learning new fields, you'll find yourself
starting out neither at the fundamental rules of the field nor at the level of
"just have a computer do it", but at a healthy middle where you can work to
either end. Just as you start learning addition by memorizing 1 + 1 = 2 instead
of discussing set theory or plugging numbers into a calculator, we will start in
the middle and spread towards both ends.

The quick brown fox jumped over the lazy dog.

the
	thE
 tHE
tHe

THe
THE
ThE
The

There should be twenty-one instances of "the."