摘要：说明：在做完每道题后要按'Enter'键提交。如果自己选择用哪种计算类型，每次计算都要选择。随机运算也是每次计算都要选择一次。Form1的代码：using System;using System.Collections.Generic;using System.ComponentModel;usin... 阅读全文

摘要：using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;u... 阅读全文