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    <p>The prototype for <code>getchar</code> is:</p> <pre><code>int getchar (void); </code></pre> <p>It returns an <code>int</code> because it needs to return EOF which is not a character.</p> <hr> <p>Expanding on that, the function needs to be able to return <em>any</em> valid character, as well as being able to return a special "character" indicating that you're reached the end of file (or an error has occurred).</p> <p>Since a <code>char</code> data type can only hold one of the characters, there would be no way to indicate this end of file if all the function returned was a <code>char</code>. That's because, if you selected one of those <code>char</code> values to represent end of file, you would not be able to tell the difference between the end of file and the actual character.</p> <p>For example, let's choose 'A' to indicate end of file. When you actually get back an 'A' from <code>getchar()</code>, how will you know whether you've reached the end of file or whether the user actually entered 'A'?</p> <p>To get around this, many functions that give you back a <code>char</code> will actually give you an <code>int</code> and use one of the integer values which don't have an actual <code>char</code> equivalent (such as -1).</p> <p>In that case (assuming an 8-bit <code>char</code>), you would get back either a -1 if you've reached the end of the file or a value from 0 through 255 inclusive representing the character entered.</p> <hr> <p>And you need to get yourself both a more modern book <em>and</em> a more modern compiler:</p> <pre><code>#include &lt;stdio.h&gt; int main (void) { int ch = getchar(); if (ch != EOF) printf("You typed: %c\n", ch); return 0; } </code></pre> <p>Why anyone is still using Borland is this day and age (where gcc is both just as cheap and <em>much</em> better) is beyond me.</p>
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    1. POProblem with character input by getchar() or getche()
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    1. USpaxdiablo
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    1. COdont working even now.....do you think it's an issue of my outdated compiler?
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      1. USSharifhs
    2. COWorks fine for me with gcc. Keep in mind that you may be in cooked input mode. That means you may have to hit enter after your keypress.
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    3. COThanks pabdialo, it works now!
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