19 lines
		
	
	
		
			351 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			19 lines
		
	
	
		
			351 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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function nfact($n) {
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    if ($n == 0) {
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        return 1;
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    }
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    else {
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        return $n * nfact($n - 1);
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    }
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}
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echo "\n\nPlease enter a whole number ... ";
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$num = trim(fgets(STDIN));
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// ===== PROCESS - Determing the factorial of the input number =====
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$output = "\n\nFactorial " . $num . " = " . nfact($num) . "\n\n";
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echo $output;
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?>
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