c制作计算器

虽然电脑坏了，之前设计的计算器的代码也没了，但是重新又做了一个也没用了多久。这说明放在脑子里的东西还是最安全的！其实做一个计算器也不难，第一先把界面设计好，这里要用到 XAML 语音，然后用 C#将背后的处理函数写好就好了。我做的这个计算器功能其实还是不是很完善的，但还是欢迎大家免费下载/share/link?shareid=470362using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;namespace 计算器/ / MainWindow.xaml 的交互逻辑/ public partial class MainWindow : Windowpublic MainWindow()InitializeComponent();MessageBox.Show(“本计算器暂不支持负数计算！“);private string txt=“0+“;/定义一个字符串变量来存储数据static double temp = 0;/定义一个临时变量用来存储计算的数据string txt1;private void text_TextChanged(object sender, TextChangedEventArgs e)txt1 =txt.Substring(2);text.Text = txt1;private void button1_Click(object sender, RoutedEventArgs e)txt += “1“;text.Text = txt;private void button2_Click(object sender, RoutedEventArgs e)txt += “2“;text.Text = txt;private void button3_Click(object sender, RoutedEventArgs e)txt += “3“;text.Text = txt;private void button4_Click(object sender, RoutedEventArgs e)txt += “4“;text.Text = txt;private void button5_Click(object sender, RoutedEventArgs e)txt += “5“;text.Text = txt;private void button6_Click(object sender, RoutedEventArgs e)txt += “6“;text.Text = txt;private void button7_Click(object sender, RoutedEventArgs e)txt += “7“;text.Text = txt;private void button8_Click(object sender, RoutedEventArgs e)txt += “8“;text.Text = txt;private void button9_Click(object sender, RoutedEventArgs e)txt += “9“;text.Text = txt;private void button_plus_Click(object sender, RoutedEventArgs e)txt += “+“;text.Text = txt;private void button_subtraction_Click(object sender, RoutedEventArgs e)txt += “-“;text.Text = txt;private void button_multiple_Click(object sender, RoutedEventArgs e)txt += “x“;text.Text = txt;private void button_division_Click(object sender, RoutedEventArgs e)txt += “/“;text.Text = txt;private void button_point_Click(object sender, RoutedEventArgs e)txt += “.“;text.Text = txt;private void button0_Click(object sender, RoutedEventArgs e)txt += “0“;text.Text = txt;private void button_equal_Click(object sender, RoutedEventArgs e)txt += “=“;text.Text = txt;string str1=“;/用来作为中间变量char sign = new chartxt.Length;/用来存储运算符int j = 0;double number = new doubletxt.Length;/用来存储输入的数据char str3 = txt.ToCharArray();/将字符串 txt 存入字符型数组 str3中/从 txt 字符串中分离数据和运算符for (int i = 0; i = 0|str3i=.)str1 += str3i;/str3数组中的数字与运算符分离开来，str1作为中间变量elsesignj = str3i;/存入运算符numberj=Convert.ToDouble(str1); /将 str1存入的数据转化为 double 型数据str1 = “;/将 str 清空便于下次存入j+;if (str3i = =)int k = 0;int index = 0;double temp2 = 1;switch(signk)case +:temp = number0 + number1; index = k; break;case -:temp = number0 - number1; index = k; break;case x:temp=number0*number1;break;case /:temp=number0/number1;break;for (k = 1; signk != =; k+)switch (signk)case +:temp = temp + numberk + 1; index = k; break;case -:temp = temp - numberk + 1; index = k; break;case x:/考虑连乘情况if (signk - 1 = +)temp = temp - numberk;temp2 = numberk * numberk + 1;temp += temp2; break;if (signk - 1 = -)temp = temp + numberk;temp2 = numberk * numberk + 1;temp -= temp2; break;if (signk - 1 = x)if (signindex = +)temp = temp - temp2;temp2 = temp2 * numberk + 1;temp = temp + temp2;if (signindex = -)temp = temp + temp2;temp2 = temp2 * numberk + 1;temp = temp - temp2;break;if (signk - 1 = /)if (signindex = +)temp = temp - temp2;temp2 = temp2 * numberk +1;temp = temp + temp2;if (signindex = -)temp = temp + temp2;temp2 = temp2 * numberk + 1;temp = temp - temp2;break;case /:if (signk - 1 = +)temp = temp - numberk;temp2 = numberk / numberk + 1;temp += temp2; break;if (signk - 1 = -)temp = temp + numberk;temp2 = numberk / numberk + 1;temp -= temp2; break;if (signk - 1 = x)if (signindex = +)temp = temp - temp2;temp2 = temp2 / numberk + 1;temp = temp + temp2;if (signindex = -)temp = temp + temp2;temp2 = temp2 / numberk + 1;temp = temp - temp2;break;if (signk - 1 = /)if (signindex = +)temp = temp - temp2;temp