| GIT地址 | https://github.com/fengshikun123/Calculator |
|---|---|
| GIT用户名 | fengshikun123 |
| 学号后五位 | 24113 |
| 博客地址 | https://www.cnblogs.com/q1281037172/ |
| 作业链接 | https://edu.cnblogs.com/campus/xnsy/GeographicInformationScience/homework/7582 |
一、配置环境
1.VS2017安装与配置 2.GIT安装与配置、克隆项目
二、设计随机数四则运算项目
大致上用到switch，也用到了random生成随机数和多个循环语句。然后感觉方法是比较笨的那种，看起来就很长。
运行结果：
using System.IO;
namespace AchaoCalculate
{
class CreatFile
{
public CreatFile(string st)
{
StreamWriter sw = new StreamWriter("D:/subject.txt", true);
sw.WriteLine(st);
sw.Close();
}
}
}
using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
namespace AchaoCalculate
{
class PrintCalcuate
{
public PrintCalcuate(int n)
{
int i = 0;
int a, b, c, d, e, f;
string st;
Random rd = new Random();
while (i < n)
{
a = rd.Next(0, 100);
b = rd.Next(0, 100);
c = rd.Next(0, 100);
d = rd.Next(0, 100);
e = rd.Next(0, 100);
f = rd.Next(1, 100);
int m =rd.Next(0,9);
switch (m)
{
case 0:
int end1 = b * c - a;
st = b + "*" + c + "-" + a + "=" + end1;
if (end1 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 1:
int end2 = e - c + b;
st = e + "-" + c + "+" + b + "=" + end2;
if (end2 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 2:
int end3 = e + f * d + c;
st = e + "-" + f + "*" + d + "+" + c + "=" + end3;
if (end3 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 3:
int end4 = b / f + e;
st = b + "/" + f + "+" + e + "=" + end4;
if (b % f == 0 && end4 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 4:
int end5 = c / f + c * d;
st = c + "/" + f + "+" + c + "*" + d + "=" + end5;
if (c % f == 0 && end5 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 5:
int end6 = e - c / f;
st = e + "-" + c + "/" + f + "=" + end6;
if (c % f == 0 && end6 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 6:
int end7 = e * f - c;
st = e + "*" + f + "-" + c + "=" + end7;
if (end7 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 7:
int end8 = e * f - c + a;
st = e + "*" + f + "-" + c + "+" + a + "=" + end8;
if (end8 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 8:
int end9 = e + c / f - a;
st = e + "+" + c + "/" + f + "-" + a + "=" + end9;
if (c % f == 0 && end9 >= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
case 9:
int end10 = c - a / f + a;
st = c + "-" + a + "/" + f + "+" + a + "=" + end10;
if (a % f == 0 && end10>= 0)
{
Console.WriteLine(st);
CreatFile sw = new CreatFile(st);
i++;
}
break;
default:
break;
}
}
}
}
}using System;
namespace AchaoCalculate
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("请输入出题数：");
int n = Convert.ToInt32(Console.ReadLine());
PrintCalcuate calcuate1 = new PrintCalcuate(n);
Console.ReadKey();
}
}
}
三、单元测试
测试通过
四、效能分析
（结果见下图）
五、提交代码
中途操作失误了几次，但是总体来说还算简单，甚至一开始总是把Git 写成get。
总结
这次代码写的对我来说还是比较长的吧，不知道怎么开头，也在中间卡壳了很多次然后在室友的指点下操作了一番，最终还是写了出来。然后像git的操作还是能照葫芦画瓢慢慢做出来。