小学四年级水平的四则运算--网页版

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>










请输入题目数量
  


    

此页面用于输入题目数量,结果:

 

 

 

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>








    <%
        //Integer.parseInt(str);   获取题目数量
        int n = Integer.parseInt(request.getParameter("quantity"));
        //out.print(n);
        int a;
        int b;
        //int n=50;
        String operator = "";
        String[] expression = new String[n];
        int[] result = new int[n];
        int[] user = new int[n];
        //1.随机数  2.符号  3.是否可以生成表达式---满足输出以及储存结果  不满足重新生成随机数和表达式
        int i = 0;
        //    for (i = 0; i < n; )
        while (i < n) {
            //生成一个表达式
            a = (int) (1 + Math.random() * 99);
            b = (int) (1 + Math.random() * 99);
            int k = (int) (1 + Math.random() * 3);//1~4对应不同的运算符
            switch (k) {
            case 1:
                operator = "+";
                break;
            case 2:
                operator = "-";
                break;
            case 3:
                operator = "*";
                break;
            case 4:
                operator = "/";
                break;
            }

            //判断表达式是否满足要求
            if (operator.equals("+") && a + b < 100) {
                result[i] = a + b;
                out.print(i+1+"."+a + operator + b + "=" + "
");
        %>
                 >

                 <% 
                i++;
            }
            //out.print(expression[i]);

            else if (operator.equals("-") && a - b >= 0) {
                result[i] = a - b;
                out.print(i+1+"."+a + operator + b + "=" + "
");
                %>
                >

<% 
                i++;
            }

            else if (operator.equals("*") && a * b <= 100) {
                result[i] = a * b;
                out.print(i+1+"."+a + operator + b + "=" + "
");
                %>
                >

            <%     
                i++;
            }

            else if (operator.equals("/") && (a % b == 0) && b != 0) {
                result[i] = a / b;
                out.print(i+1+"."+a + operator + b + "=" + "
");
                %>
                            >

            <%
                i++;
            }
    %>
    
    <%--  --%>
    <%
        };
    %>
         <%  //session.setAttribute("useras", user);
            session.setAttribute("crctas", result);
            session.setAttribute("num",n); 
            %>
            
 

此页面用于出题:

 

 

 

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







    
        <%
            //int[] user = (int[]) session.getAttribute("useras");
            int[] result = (int[]) session.getAttribute("crctas");
            int n = (Integer) session.getAttribute("num");
            int []user=new int[n];
            int count = 0;
            for(int i=0;i)
            {
              int a=Integer.parseInt(request.getParameter("user"+i));
              user[i]=a;
            }
            for (int i = 0; i < n; i++) {
                if (user[i] == result[i]) {
                    out.print("第" + (i + 1 )+ "题回答正确 ");
                    count++;
                } else
                    out.print("第" + (i + 1) + "题回答错误 ,正确答案是:" + result[i]);
                out.println("
");
            }
             out.print("总共做对 " + count + "道题,错了 "+(n-count)+"道题");
        %>
    

此页面显示判断结果:

 

 

 

总结:

当时有些功能不知道怎么实现,在某位好心人的帮助下,这些雪中送炭的代码摘录下来在这里了哦

   >



<%  //session.setAttribute("useras", user);
            session.setAttribute("crctas", result);
            session.setAttribute("num",n); 
            %>
          

int[] result = (int[]) session.getAttribute("crctas");
            int n = (Integer) session.getAttribute("num");