57 lines
1.3 KiB
HTML
57 lines
1.3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>For statement</title>
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<link href="style.css" rel="stylesheet" type="text/css">
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</head>
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<body background="images/back.gif">
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<!--START-->
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<h3>For statement</h3>
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A for statement has the form
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<p>
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<blockquote>
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<pre><b>for</b> (<statement1> ; <expression> ;<statement2>) <statement3></pre>
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</blockquote>
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<p>
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This works as follows. First statement1 is executed. Then the expression
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is evaluated. If it is true, statement 3 is executed; then statement 2 and
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then the expression is evaluated again. This continues until the
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expression is false.
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<p>
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This may sound complicated. You should interpret this as follows. The
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first statement initializes the for-loop. The expression tests whether the
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loop should be ended. Statement2 is the step statement that goes to the
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next loop evaluation.
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<p>
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The most common use is to have a counter run through some range.
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<p>
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<b>Example</b><br>
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The following program initializes an array of length 10 with the values 1-
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10.
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<p>
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<blockquote>
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<pre>
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{
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<b>for</b> (i=0; i<=9; i+=1) list[i] = i+1;
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}
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</pre>
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</blockquote>
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<!--END-->
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</body>
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</html>
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<!-- KEYWORDS
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for statement
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for loop
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--> |