<%@ page language="java" contentType="text/html; charset=utf8"
pageEncoding="utf8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>四则运算</title>
<body>
<table width="500" border="0">
<tr>
<td align="center" colspan="2" style="background-color:#FFA500;">
<head>四则运算</head>
</td>
</tr>
<tr>
<td>
<form action="request.jsp" mehod="post">
请输入题目数量：<input id="demo" type="test" name="num"><br />
</form>
</td>
</tr>
</table>
<script >
function myFunction(){
var x=document.getElementByld("demo").value;
if(x==""||lisNaN(x)){
alert("输入错误，请重新输入");
}
}
</script>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf8"
pageEncoding="utf8"%>
<%@ page import="java.util.*" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>获取参数</title>
</head>
<body background="C:\Users\admin\Pictures\Saved Pictures\1.jpg" style="color:white">
<form action="judge.jsp" method="post" >
<p >
<%
int num=Integer.parseInt(request.getParameter("num"));
int[] result=new int[num];
int[] re=new int[num];
for(int i=0;i<num;i++){
Random random=new Random();
int fuhao=Math.abs(random.nextInt()%4);
int a=Math.abs(random.nextInt()%(num-1))+1;
int b=Math.abs(random.nextInt()%(num-1))+1;
if(fuhao==0){
result[i]=a+b;
out.println(a+"+"+b+"=");
}
if(fuhao==1){
if(a>=b){
result[i]=a-b;
out.println(a+"-"+b+"=");
}
else{
result[i]=b-a;
out.println(b+"-"+a+"=");
}
}
if(fuhao==2){
result[i]=a*b;
out.println(a+"*"+b+"=");
}
if(fuhao==3){
if(a%b!=0) {i--;continue;}
if(b==0) {i--;continue;}
else{
result[i]=a/b;
out.println(a+"/"+b+"=");
}
}
%>
<input type="text" name=<%=i%>><br>
</p>
<%
}
session.setAttribute("v1",re); session.setAttribute("v2",result);
session.setAttribute("v3",num);
%>
<input type="submit" name="submit" value="submit" >
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=GBK"
pageEncoding="GBK"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>结果</title>
</head>
<body>
<%
int[] k=(int [])session.getAttribute("v2");
int n=(Integer)session.getAttribute("v3");
int []s=new int [n];
for(int i=0;i<n;i++){
s[i]=Integer.parseInt(request.getParameter(i+""));
}
int right=0;
for(int i=0;i<n;i++){
out.println(i+1+":");
if(s[i]==k[i]){
out.print("right");
right++;
}
else out.print("false");
out.print("<br>");
}
%>
<input type="button" value="关闭" onClick="window.close();">
</body>
</html>
