C#实现按键计算器功能2(增强版)
2021-06-30 19:06
标签：string reading 行操作 oid i++ read 缺陷 mode 使用 （ 1）熟悉C#语言的使用和语法知识 （1）设计简单的含交互界面的计算器软件，具有较强的用户体验感。 （2）使用C#语言进行编程，创建窗体应用程序。 （3）实现较简单加减乘除等运算。 （1）每个按钮均可输入，但会阻止一些非法输入，例如，在没有输入数字的时候就输入运算符，点号的多次输入，这些都会阻止。 （2）实现了运算的优先级，即乘除是先与加减计算的。 （3）可实现小数的计算，即弥补了整型无法得打小数的缺陷 （4）增加了归零按钮，一键返回到初始状态 （5）按钮和键盘绑定，可实现键盘敲击时，界面按钮同时相应 （6）结果可继续运算，在点击“=”完成后，可在第二个文本框中输出结果，这时，如果在点击运算符，可对这个结果继续进行操作，实现完美的可继续性 5.代码如下： C#实现按键计算器功能2(增强版) 标签：string reading 行操作 oid i++ read 缺陷 mode 使用 原文地址：https://www.cnblogs.com/junjunjun123/p/9974590.html1. 实验目的
2. 实验要求
3. 运行效果如下：
4. 效果特点：
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 按键计算器
{
public partial class Form1 : Form
{
double[] number = new double[50];
char[] operat = new char[50];
bool isNumber = false;
bool isDot = false;
bool isOperat = false;
bool isEqual = false;
int numberIndex = 0;
int operatIndex = 0;
int dotCount = 0;
public Form1()
{
InitializeComponent();
btnleft.Hide();
btnright.Hide();
}
//将键盘与按钮关联
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if (keyData == Keys.NumPad1||keyData==Keys.D1)
{
this.btn1.Focus();
this.btn1.PerformClick();
}
if (keyData == Keys.NumPad2 || keyData == Keys.D2)
{
this.btn2.Focus();
this.btn2.PerformClick();
}
if (keyData == Keys.NumPad3 || keyData == Keys.D3)
{
this.btn3.Focus();
this.btn3.PerformClick();
}
if (keyData == Keys.NumPad4 || keyData == Keys.D4)
{
this.btn4.Focus();
this.btn4.PerformClick();
}
if (keyData == Keys.NumPad5 || keyData == Keys.D5)
{
this.btn5.Focus();
this.btn5.PerformClick();
}
if (keyData == Keys.NumPad6 || keyData == Keys.D6)
{
this.btn6.Focus();
this.btn6.PerformClick();
}
if (keyData == Keys.NumPad7 || keyData == Keys.D7)
{
this.btn7.Focus();
this.btn7.PerformClick();
}
if (keyData == Keys.NumPad8 || keyData == Keys.D8)
{
this.btn8.Focus();
this.btn8.PerformClick();
}
if (keyData == Keys.NumPad9 || keyData == Keys.D9)
{
this.btn9.Focus();
this.btn9.PerformClick();
}
if (keyData == Keys.NumPad0 || keyData == Keys.D0)
{
this.btn0.Focus();
this.btn0.PerformClick();
}
if (keyData == Keys.Add)
{
this.btnadd.Focus();
this.btnadd.PerformClick();
}
if (keyData == Keys.Subtract || keyData == Keys.OemMinus)
{
this.btnsub.Focus();
this.btnsub.PerformClick();
}
if (keyData == Keys.Multiply)
{
this.btnmul.Focus();
this.btnmul.PerformClick();
}
if (keyData == Keys.Divide)
{
this.btndiv.Focus();
this.btndiv.PerformClick();
}
if (keyData == Keys.Enter || keyData == Keys.Oemplus)
{
this.btnequ.Focus();
this.btnequ.PerformClick();
}
if (keyData == Keys.Back)
{
this.btncle.Focus();
this.btncle.PerformClick();
}
return base.ProcessCmdKey(ref msg, keyData);
}
private void btn1_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text ="";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "1";
textBox2.Text = textBox2.Text + "1";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn2_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "2";
textBox2.Text = textBox2.Text + "2";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn3_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "3";
textBox2.Text = textBox2.Text + "3";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn4_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "4";
textBox2.Text = textBox2.Text + "4";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn5_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "5";
textBox2.Text = textBox2.Text + "5";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn6_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "6";
textBox2.Text = textBox2.Text + "6";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn7_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "7";
textBox2.Text = textBox2.Text + "7";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn8_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "8";
textBox2.Text = textBox2.Text + "8";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn9_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "9";
textBox2.Text = textBox2.Text + "9";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btn0_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
textBox1.Text = "";
textBox2.Text = "";
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
textBox1.Text = textBox1.Text + "0";
textBox2.Text = textBox2.Text + "0";
isNumber = true;
isDot = false;
isOperat = false;
isEqual = false;
}
private void btnf_Click(object sender, EventArgs e)
{
if ((isNumber == true)&&(dotCount==0))
{
textBox1.Text = textBox1.Text + ".";
textBox2.Text = textBox2.Text + ".";
dotCount++;
isNumber = false;
isDot = true;
isOperat = false;
isEqual = false;
}
}
private void btnadd_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘+‘;
textBox1.Text = textBox2.Text + "+";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
if ((isOperat==false)&&(isDot==false)&&(isNumber == true))
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘+‘;
textBox1.Text = textBox1.Text + "+";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void btnmul_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘*‘;
textBox1.Text = textBox2.Text + "*";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
if ((isOperat == false) && (isDot == false) && (isNumber == true))
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘*‘;
textBox1.Text = textBox1.Text + "*";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
}
private void btndiv_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘/‘;
textBox1.Text = textBox2.Text + "/";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
if ((isOperat == false) && (isDot == false) && (isNumber == true))
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘/‘;
textBox1.Text = textBox1.Text + "/";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
}
private void btnsub_Click(object sender, EventArgs e)
{
if (isEqual == true)
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘-‘;
textBox1.Text = textBox2.Text + "-";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
if ((isOperat == false) && (isDot == false) && (isNumber == true))
{
number[numberIndex] = double.Parse(textBox2.Text);
operat[operatIndex] = ‘-‘;
textBox1.Text = textBox1.Text + "-";
textBox2.Text = "";
numberIndex++;
operatIndex++;
dotCount = 0;
isNumber = false;
isDot = false;
isOperat = true;
isEqual = false;
}
}
private void btnequ_Click(object sender, EventArgs e)
{
if (textBox2.Text != "")
{
number[numberIndex] = double.Parse(textBox2.Text);
//判断乘除
for (int i = 0; i operatIndex;)
{
//对乘号分析
if (operat[i] == ‘*‘)
{
number[i] = number[i] * number[i + 1];
for (int j = i + 1; j )
{
number[j] = number[j + 1];
operat[j - 1] = operat[j];
}
numberIndex--;
operatIndex--;
}
//对除号分析
else if (operat[i] == ‘/‘)
{
number[i] = number[i] / number[i + 1];
for (int j = i + 1; j )
{
number[j] = number[j + 1];
operat[j - 1] = operat[j];
}
numberIndex--;
operatIndex--;
}
else
{ i++; }
}
//判断加减
for (int i = 0; i operatIndex;)
{
//对加号分析
if (operat[i] == ‘+‘)
{
number[i] = number[i] + number[i + 1];
for (int j = i + 1; j )
{
number[j] = number[j + 1];
operat[j - 1] = operat[j];
}
numberIndex--;
operatIndex--;
}
//对减号分析
else if (operat[i] == ‘-‘)
{
number[i] = number[i] - number[i + 1];
for (int j = i + 1; j )
{
number[j] = number[j + 1];
operat[j - 1] = operat[j];
}
numberIndex--;
operatIndex--;
}
else { i++; }
}
textBox2.Text = number[0].ToString();
isNumber = false;
isDot = false;
isOperat = false;
isEqual = true;
numberIndex = 0;
operatIndex = 0;
}
}
private void btncle_Click(object sender, EventArgs e)
{
isNumber = false;
isDot = false;
isOperat = false;
isEqual = false;
numberIndex = 0;
operatIndex = 0;
dotCount = 0;
textBox1.Text = "";
textBox2.Text = "";
}
private void btnleft_Click(object sender, EventArgs e)
{
}
private void btnright_Click(object sender, EventArgs e)
{
}
}
}