DISEÑO DE SISTEMAS: FORMULARIO CON BOTONES

Nombre: Alexandra Maguana

Ciclo: Quinto “Sistemas”

HTML

<html>
<head>
<style> type= "text/CSS">
[required]{
borde-color:red;
box-shadow:0px 0px 5px green;
}
</style>
</head>
<body>
<form action ="Resul.php" method ="POST">
    <table border=2>
        <tr>
            <td><input type="integer" name="num" required style="width:340px;height:30px"> </td>
        </tr>
            <td> <input name="4" type="submit" value="Ingresar" >
        </tr>
    </table>
</form>
</body>
</html>

PHP

<?php
$num=$_POST['num'];
        echo"<table borde=2><form action='Prueba.php' method='POST'>";
        For($i=1;$i<=$num;$i++){
            echo"<tr><td>num</td>";
            echo"<td><input type='text'" ." name='num$i'"." required/></td>";
            echo "</tr>";
        }
        echo "</table>";
        $boton1 = "<input name='b1' type=\"submit\" Value=\"Suma"."\">";
        echo $boton1;
        $boton2 = "<input name='b2' type=\"submit\" Value=\"Promedio"."\">";
        echo $boton2;
        $boton3 = "<input name='b3' type=\"submit\" Value=\"Promedio Pares"."\">";
        echo $boton3;
        $boton4 = "<input name='b4' type=\"submit\" Value=\"Promedio Impares"."\"></form>";
        echo $boton4;
?>

PHP

<?php
$x=0;
if (isset($_POST['b1']))
    $x=1;
if (isset($_POST['b2']))
    $x=2;
if (isset($_POST['b3']))
    $x=3;
if (isset($_POST['b4']))
    $x=4;
switch($x){
    case 1:
        $acu=0;
        for($i=1;$i<count($_POST);$i++){
            $acu+=$_POST['num'.$i];
        }
        echo $acu;
    break;
    case 2:
        $acu=0;
        for($i=1;$i<count($_POST);$i++){
            $acu+=$_POST['num'.$i];
        }
        echo $acu/(count($_POST)-1);
    break;
    case 3:
        $par=0;
        $con=0;
        for($i=1;$i<count($_POST);$i++){
        if (($_POST['num'.$i]%2)==0){
            $par+=$_POST['num'.$i];
            $con++;
            }
        }
        echo $par/$con;
    break;
    case 4:
        $impar=0;
        $con=0;
        for($i=1;$i<count($_POST);$i++){
        if (($_POST['num'.$i]%2)!=0){
            $impar+=$_POST['num'.$i];
            $con++;
            }
        }
        echo $impar/$con;
    break;
}
?>

EJECUCION

Al ejecutar con el servidor localhost nos parece la siguiente ventana.