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Created May 15, 2019 17:15
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exercícios simples php
Raw
ex01
<html>
<head>
<title> Exemplo For </title>
</head>
<body>
<a href="index.php">Home</a>
<h2>Exemplo 01</h2>
<p>Mostrar números de 1 a 5 na tela:</p>
<?php
for ($num=1; $num <=5; $num++)
{
echo "Valor de 'num': " .$num. "<br>";
}
?>
<h2>Exemplo 02</h2>
<p>Mostrar números pares entre 0 20:</p>
<?php
for($cont=0; $cont <=20; $cont++)
{
//% = mod, pega o resto da divisão
if($cont % 2 == 0)
{
echo $cont . " "; //listar um ao lado do outro
}
}
?>
<h2>Exemplo 03</h2>
<p>Contar quantos números ímpares existem entre 3 e 734</p>
<?php
$qtde = 0;
for($i = 3; $i < 735; $i++)
{
if($i % 2 == 1)
{
$qtde++;
}
}echo "Resposta: " . $qtde;
?>
<h2>Exemplo 04</h2>
<p>Média dos valores pares entre 3 e 734</p>
<?php
$qtde = 0;
$media = 0;
for($j = 3; $j < 735; $j++)
{
if($j % 2 == 0)
{
$qtde++;
$media += $j; // $media = $media + $j;
}
}
$media /= $qtde; // $media = $media/$qtde;
echo "Resposta: " . $media;
?>
</body>
</html>
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