<html>
<head>
</head>
<body>
<script type="text/javascript">
var resto;//resto de dividir dni/23
var dni; //n asignado al dni
dni=parseInt(prompt('dame el dni',''));
resto=dni%23;
switch(resto){
case 0:
alert(dni+'T');
break;
case 1:
alert(dni+'R');
break;
case 2:
alert(dni+'W');
break;
case 3:
alert(dni+'A');
break;
case 4:
alert (dni+'G');
break;
case 5:
alert (dni+'M');
break;
case 6:
alert (dni+'Y');
break;
case 7:
alert (dni+'F');
break;
case 8:
alert (dni+'P');
break;
case 9:
alert (dni+'D');
break;
case 10:
alert (dni+'X');
break;
case 11:
alert (dni+'B');
break;
case 12:
alert (dni+'N');
break;
case 13:
alert (dni+'J');
break;
case 14:
alert (dni+'Z');
break;
case 15:
alert (dni+'S');
break;
case 16:
alert (dni+'Q');
break;
case 17:
alert (dni+'V');
break;
case 18:
alert (dni+'H');
break;
case 19:
alert (dni+'L');
break;
case 20:
alert (dni+'C');
break;
case 21:
alert (dni+'K');
break;
case 22:
alert (dni+'E');
break;
default:
alert('Este dni no existe');
break;
}
</script>
</body>
</html>
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