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    <p>Does your words file actually have <code>5049</code> entries? Even if it doesn't, you shouldn't assume that it does. Your <code>readFile</code> function should determine how many words are <em>actually</em> present in your <code>words</code> array after reading the file, otherwise, taking a random index into the <code>words</code> array will result in accessing uninitialized strings, which I suspect is leading to your memory corruption.</p> <p>So, if <code>readFile</code> only sees <em>10</em> words, you should only be choosing a random word between indices <code>0..9</code>. You're already keeping the number of words in variable <code>z</code> in the <code>readFile</code> method, share that with the rest of your code.</p> <p>When you choose a random index into an array, note that since the arrays are 0-based, you should get the random and just mod by the number of valid array elements. So use <code>int randomNum = rand() % 5049;</code> without the <code>+1</code>.</p> <p>Furthermore, all this <code>strlen/+1/-1</code> stuff is unnecessary and confusing, prefer <code>strncpy</code> over <code>memcpy</code> (and <code>strcpy</code>) for strings and you don't need to deal with that. Note that the result of<code>strlen</code> <strong>doesn't</strong> include the null terminator, so you won't need to account for that with <code>-1</code>. I think that your <code>jumbleWord</code> function should always be ignoring the last <code>char</code> in the jumble.</p> <p>Use this strategy for your string allocations: you have <code>MAX_WORD_LENGTH</code>, declare strings in your game as either <code>char word[MAX_WORD_LENGTH + 1]</code> or <code>char *word = malloc(MAX_WORD_LENGTH + 1)</code>. Now to copy strings, use <code>strncpy(src, dest, MAX_WORD_LENGTH)</code>.</p>
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    1. POWhy won't this printf() statement print two string variables in C?
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    1. COI know that my readfile has only 5049 entries and wont' change. So I confess, yes, I hacked it. I could do while(!feof(file)){} and do a fgets to read it.
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    2. COin that case, see the note about being off-by-one with rand. but you should still persist the actual number of words read, it isn't hard, and prevents potential errors with short files
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    3. COwhen I run your code with only **2** changes: keeping a global `numWords == z` set in `readFile`, and picking a rand with `int randomNum = rand() % numWords;`, the code runs fine, except that the last `char` is never jumbled, see my answer about that. There are probably other problems here though, hard to tell. But that should get you going.
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