摘要：function computer($num1,$num2,$opt){switch($opt){case "+":$reslut = $num1+$num2;break;case "-":$reslut = $num1-$num2;break;case "*":$reslut = $num1*$num2;break;case "
function computer($num1,$num2,$opt){
switch($opt){
case "+":
$reslut = $num1+$num2;
break;
case "-":
$reslut = $num1-$num2;
break;
case "*":
$reslut = $num1*$num2;
break;
case "/":
$reslut = $num2==0? '错误'：$num1/$num2;
break;
default:
$reslut="错误";
}
return $reslut;
}
echo computer(10,5,*);
批改老师：天蓬老师批改时间：2019-03-16 13:07:18
老师总结：这个案例,你学到了什么呢? 不想谈谈吗?
