C# 简单计算器设计 & 字符提取和整数整除练习
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简单计算器设计
-----------------------
如图所示的页面，当用户选择不同的运算类型时，下方文本框发生相应的变化。
若存在非法输入，文本框输出结果为“？”。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace A._2._2_WinForm
public partial class Form1 : Form
public Form1()
InitializeComponent();
private void label1_Click(object sender, EventArgs e)
private void button1_Click(object sender, EventArgs e)
if(radioButton1.Checked)
double sum, number1, number2;
bool is1 = double.TryParse(textBox1.Text,out number1);
bool is2 = double.TryParse(textBox2.Text,out number2);
if (is1 & is2)
sum = number1 + number2;
textBox3.Text = sum.ToString();
else
textBox3.Text = "?";
else if (radioButton2.Checked)
double minus, number1, number2;
bool is1 = double.TryParse(textBox1.Text,out number1);
bool is2 = double.TryParse(textBox2.Text,out number2);
if (is1 & is2)
minus = number1 - number2;
textBox3.Text = minus.ToString();
else
textBox3.Text = "?";
else if (radioButton3.Checked)
double multiplate, number1, number2;
bool is1 = double.TryParse(textBox1.Text, out number1);
bool is2 = double.TryParse(textBox2.Text,out number2);
if (is1 & is2)
multiplate = number1 * number2;
textBox3.Text = multiplate.ToString();
else
textBox3.Text = "?";
else if (radioButton4.Checked)
double divide,number1,number2;
bool is1 = double.TryParse(textBox1.Text,out number1);
bool is2 = double.TryParse(textBox2.Text,out number2);
if (is1 & is2)
divide = number1 / number2;
textBox3.Text = divide.ToString();
else
textBox3.Text = "?";
else if (radioButton5.Checked)
double modulo, number1, number2;
bool is1 = double.TryParse(textBox1.Text, out number1);
bool is2 = double.TryParse(textBox2.Text, out number2);
if(is1&is2)
modulo = number1 % number2;
textBox3.Text = modulo.ToString();
else
textBox3.Text = "?";
else
DialogResult result = MessageBox.Show("请选择运算类型！");
private void radioButton1_CheckedChanged(object sender, EventArgs e)
this.label3.Text = "加法";
this.label4.Text = "+";
private void radioButton2_CheckedChanged(object sender, EventArgs e)
this.label3.Text = "减法";
this.label4.Text = "-";
private void radioButton3_CheckedChanged(object sender, EventArgs e)
this.label3.Text = "乘法";
this.label4.Text = "×";
private void radioButton4_CheckedChanged(object sender, EventArgs e)
this.label3.Text = "除法";
this.label4.Text = "÷";
private void radioButton5_CheckedChanged(object sender, EventArgs e)
this.label3.Text = "取模";
this.label4.Text = "|";
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace A._2._2_WinForm
static class Program
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
---------------------------------------------------------------------------------------------
字符提取和整数整除练习
-----------------------
控制台输入如下信息，功能如图所示。
使用两种方法，字符提取法（提取单个字符进行类型转换为整型再逐个相加）和整数整除法（取整和求余数来取得每一位的值再逐个相加）。
Method1.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace A._2._3_Console.Method1
class Method1
//字符提取法
public void func(int number)
string str = number.ToString();
int sum = 0;
Console.WriteLine("该整数共有0位。", str.Length);
Console.Write("实现思路1:每一位的值为");
for (int i = 0; i < str.Length; ++i)
sum += int.Parse(str[i].ToString());
if(i==str.Length-1)
Console.Write(str[i] + "，");
else
Console.Write(str[i]+"、");
Console.WriteLine("这些位之和为0", sum);
Method2.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace A._2._3_Console.Method2
class Method2
//整数整除法
public void func(int number)
string str = number.ToString();
int sum = 0;
Console.Write("实现思路2:每一位的值为");
for (int i = 0; i < str.Length; ++i)
if (i == str.Length - 1)
Console.Write(str[i] + "，");
else
Console.Write(str[i] + "、");
int[] arr = new int[10000];
int j = 0;
while(number / 10 != 0)
arr[j] = number % 10;
number /= 10;
++j;
arr[j] = number % 10;
for (int i = j; i >= 0; --i)
sum += arr[i];
Console.WriteLine("这些位之和为0", sum);
Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using A._2._3_Console.Method1;
using A._2._3_Console.Method2;
namespace ch
class Program
static void Main(string[] args)
Console.Write("请输入一个大于100的整数：");
int number = int.Parse(Console.ReadLine());
new Method1().func(number); //字符提取法
new Method2().func(number); //整数整除法
Console.WriteLine("按任意键结束");
Console.ReadKey();
-------------------
2016.3.14
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