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diff --git a/reference/C/SYNTAX/got_ya.html b/reference/C/SYNTAX/got_ya.html new file mode 100644 index 0000000..4781430 --- /dev/null +++ b/reference/C/SYNTAX/got_ya.html @@ -0,0 +1,80 @@ +<title>Got Ya</title> +<head> +<script language="JavaScript"> +</script> +</head> +<body bgcolor="#ffffcc"> +<hr> +<center> +<h1>Got Ya</h1> +</center> +<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> + +<p> + +<hr> +<p> +<center> +<table border=2 width="80%" bgcolor="ivory"> +<tr align=center> +<td width="25%"> +<a href="../cref.html"> Top</a> +</td><td width="25%"> +<a href="../master_index.html"> Master Index</a> +</td><td width="25%"> +<a href="keywords.html"> Keywords</a> +</td><td width="25%"> +<a href="../FUNCTIONS/funcref.htm"> Functions</a> +</td> +</tr> +</table> +</center> +<p> +<hr> +<address>Martin Leslie +</address><p> +</body> +</html> |