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Veiga en 01:31 12 ene 2013
2013-01-12T01:31:26Z
<p></p>
<p><b>Página nueva</b></p><div>[[Category:Estructura da Linguaxe|04 - Lóxica]]<br />
<br />
Os operadores lóxicos son usados para avaliar varias comparacións, combinando os posibles valores destas.<br />
<br />
<TABLE BORDER=1 CELLPADDING=5 CELLSPACING=3><br />
<TR><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Operador</B></FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Nome</B></FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Exemplo</B></FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt"><B>Devolve<br />
certo cando:</B></FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">&amp;&amp;</FONT></FONT></P></TD><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">E</FONT></FONT></P></TD><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">(7&gt;2)<br />
&amp;&amp; (2&lt;4)</FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Devolve<br />
verdadeiro cando ambas condici&oacute;ns son verdadeiras.</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD><P LANG="en-GB" CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">and</FONT></FONT></P></TD><br />
<TD><P LANG="en-GB" CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">E</FONT></FONT></P></TD><br />
<TD><P LANG="en-GB" CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">(7&gt;2)<br />
and (2&lt;4)</FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Devolve<br />
verdadeiro cando ambas condici&oacute;ns son verdadeiras.</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">||</FONT></FONT></P></TD><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Ou</FONT></FONT></P></TD><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">(7&gt;2)<br />
|| (2&lt;4)</FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Devolve verdadeiro cando polo menos unha das d&uacute;as &eacute;<br />
verdadeira.</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD><P LANG="en-GB" CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">or</FONT></FONT></P></TD><br />
<TD><P LANG="en-GB" CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Ou</FONT></FONT></P></TD><br />
<TD><P LANG="en-GB" CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">(7&gt;2)<br />
or (2&lt;4)</FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Devolve verdadeiro cando polo menos unha das d&uacute;as &eacute;<br />
verdadeira.</FONT></FONT></P></TD><br />
</TR><br />
<TR><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">!</FONT></FONT></P></TD><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Non</FONT></FONT></P></TD><br />
<TD><P CLASS="western" ALIGN=CENTER><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">!<br />
(7&gt;2)</FONT></FONT></P></TD><br />
<TD><P CLASS="western"><FONT FACE="Verdana, sans-serif"><FONT SIZE=2 STYLE="font-size: 9pt">Nega o valor da expresi&oacute;n.</FONT></FONT></P></TD><br />
</TR><br />
</TABLE><br />
<br />
<source lang="php"><br />
<html> <br />
<head> <br />
<title>Exemplo de PHP</title> <br />
</head> <br />
<body> <br />
<?php <br />
$a = 8; <br />
$b = 3; <br />
$c = 3; <br />
echo "<p>a = 8</p>";<br />
echo "<p>b = 3</p>";<br />
echo "<p>c = 3</p>";<br />
echo "<p>'a' é igual a 'b' e 'c' é maior que 'b' ? ---- ";<br />
echo ($a == $b) && ($c > $b),"</p>"; <br />
echo "<p>'a' é igual a 'b' ou 'b' é igual a 'c' ? ---- ";<br />
echo ($a == $b) || ($b == $c),"</p>"; <br />
echo "<p>'b' non é menor ou igual a 'c' ? ---- ";<br />
echo !($b <= $c),"</p>"; <br />
?> <br />
</body> <br />
</html> <br />
</source><br />
<br />
<br />
--[[Usuario:Veiga|Rafael Veiga]] 11:13 10 feb 2009 (GMT)</div>
Veiga