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<title>Got Ya</title>
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<h1>Got Ya</h1>
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<hr>
<ul>
<li><a href="#num1">== and =</a>
<li><a href="#num1">if</a>
</ul>
<a name=num1>
<hr>
An error which almost every C programmer has made is shown below:
<pre>
main()
{
int left=10;
if ( left = 5 )
{
puts(" Values are equal...");
}
}
</pre>
The program assigns 5 to the variable <b>left</b> and returns 5.
This is interpreted as <a href="../CONCEPT/true_false.html">TRUE</a> and causes the
<a href="../FUNCTIONS/puts.html">puts</a> statement to be executed everytime.
<p>
Here is the corrected program.
<pre>
main()
{
int left=10;
if ( left == 5 ) /* Double equals required. */
{
puts(" Values are equal...");
}
}
</pre>
<hr>
<hr>
<h2>See Also:</h2>
<img src="../../GRAPHICS/whiteball.gif">
<a href="idioms.html">Coding idioms</a>.<p>
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<address>Martin Leslie
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