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    <p>Another methodology to think about:</p> <pre><code>you can cage a swallow can't you? uoy t'nac wollaws a egac nac uoy? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ you t'nac wollaws a egac nac uoy? ^^^ you can't wollaws a egac nac uoy? ^^^^^ you can't swallow a egac nac uoy? ^^^^^^^ you can't swallow a egac nac uoy? ^ you can't swallow a cage nac uoy? ^^^^ you can't swallow a cage can uoy? ^^^ you can't swallow a cage can you? ^^^ </code></pre> <p>For each thing you want to reverse (be it a whole sentence or a word):</p> <ol> <li>Find the beginning and end</li> <li>Swap the beginning and end characters</li> <li>Move "inwards" once</li> <li>keep going until you reach "the middle"</li> </ol> <p>Since reversing a chunk of a string is a common operation, it makes sense to make it its own function. And since the only information the function need to do its job is:</p> <ol> <li>the string</li> <li>the beginning index</li> <li>the ending index</li> </ol> <p>What do you think the parameters for the function would be?</p> <p>The other common thing that needs to be done over and over is "finding" something, be it a space or a punctuation mark. You may need to write this yourself, or if you can use library functions, or want a hint, look up:</p> <pre><code>man strcspn </code></pre>
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    1. COThing is... I'm not new to programming, I've done extensive work in PHP (and the related web technologies). But two weeks ago I wanted to pick C, this time for good (yes, I do have past attempts, but school was taking way too much time, so I had to give up). So I bought this book and I'm trying to follow it thoroughly. There have been many places where I could have used things like... functions, but I didn't want to, because, as I said, that's the subject of the next chapter, and I'm not trying to rush things. I'm gonna try making the most out of your suggestions. Thanks!
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    2. COno problem, glad to help! this is a bit of a large first project messing with strings in c. each of the sub-problems i mentioned (which should go into a separate function each) would be a good place to start. write a program to find either a `'.'` or a `'?'` in a string, and figure out the index. write a program to reverse all the of the characters in a string, all the way to the end (not the `'\0'` though!). and write a program that finds and prints out the individual words in a sentence. if you can do those three things separately, you can add them together to solve this larger problem. :-)
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    3. COI was thinking of writing the first function you suggest, as it would be way easier to look for the end of the input string by using a function with a variable number of arguments. But I'm not supposed to know how to write a function, so, as I said, I'll have to come up with an ad-hoc solution. As for the second function, do I need two arrays, or am I missing something? Finally, is my idea of defining words as sequences of characters delimited by spaces a good one?
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