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using System;
using System.Speech.Synthesis;
using System.Collections.Generic;
namespace ReadTxt
{
class Program
{
static string num1 = "", firchar = "", lastchar = "", tempRe = "";
static void Main(string[] args)
{
Console.Title = "语音计算器";
bool jump = true;
do
{
ConsoleKeyInfo info = Console.ReadKey();
switch (info.Key)
{
case ConsoleKey.Escape: Environment.Exit(0); jump = false; break;
case ConsoleKey.NumPad0: GetKeyRead("0"); break;
case ConsoleKey.NumPad1: GetKeyRead("1"); break;
case ConsoleKey.NumPad2: GetKeyRead("2"); break;
case ConsoleKey.NumPad3: GetKeyRead("3"); break;
case ConsoleKey.NumPad4: GetKeyRead("4"); break;
case ConsoleKey.NumPad5: GetKeyRead("5"); break;
case ConsoleKey.NumPad6: GetKeyRead("6"); break;
case ConsoleKey.NumPad7: GetKeyRead("7"); break;
case ConsoleKey.NumPad8: GetKeyRead("8"); break;
case ConsoleKey.NumPad9: GetKeyRead("9"); break;
case ConsoleKey.Add: GetKeyRead("加"); break;
case ConsoleKey.Subtract: GetKeyRead("减"); break;
case ConsoleKey.Multiply: GetKeyRead("乘"); break;
case ConsoleKey.Divide: GetKeyRead("除"); break;
case ConsoleKey.Enter:
if (!string.IsNullOrEmpty(num1) && GetSignIsTrue(num1))
{
SetValue(num1);
num1 = "";
}
else
{
num1 = "";
if (!string.IsNullOrEmpty(num1))
{
Console.Beep();
Console.WriteLine("Error.");
}
}
break;
default:
break;
}
} while (jump);
Console.Read();
}
//判断用户输入的内容是否合法
static void GetKeyRead(string str)
{
SpeechSynthesizer spvoice = new SpeechSynthesizer();
spvoice.Rate = 1;
spvoice.Volume = 100;
if (!string.IsNullOrEmpty(num1))
{
firchar = num1.Substring(0, 1);
lastchar = num1.Substring(num1.Length - 1, 1);
}
switch (str)
{
case "加":
if (firchar != "加" && lastchar != "加")
{
if (lastchar != "减" && lastchar != "乘" && lastchar != "除")
{
num1 += str;
}
else
{
num1 = num1.Remove(num1.Length - 1);
num1 += str;
}
}
break;
case "减":
if (firchar != "减" && lastchar != "减")
{
if (lastchar != "加" && lastchar != "乘" && lastchar != "除")
{
num1 += str;
}
else
{
num1 = num1.Remove(num1.Length - 1);
num1 += str;
}
}
break;
case "乘":
if (firchar != "乘" && lastchar != "乘")
{
if (lastchar != "加" && lastchar != "减" && lastchar != "除")
{
num1 += str;
}
else
{
num1 = num1.Remove(num1.Length - 1);
num1 += str;
}
}
break;
case "除":
if (firchar != "除" && lastchar != "除")
{
if (lastchar != "加" && lastchar != "减" && lastchar != "乘")
{
num1 += str;
}
else
{
num1 = num1.Remove(num1.Length - 1);
num1 += str;
}
}
break;
default:
num1 += str;
break;
}
spvoice.SpeakAsync(str);
Console.Clear();
Console.Write(tempRe + num1.Replace(‘加‘, ‘+‘).Replace(‘减‘, ‘-‘).Replace(‘乘‘, ‘*‘).Replace(‘除‘, ‘/‘).Replace("等于", "="));
}
static bool GetSignIsTrue(string num1)
{
if (!string.IsNullOrEmpty(num1))
{
firchar = num1.Substring(0, 1);
lastchar = num1.Substring(num1.Length - 1, 1);
}
return firchar != "加" && lastchar != "加" && firchar != "减" && lastchar != "减" && firchar != "乘" && lastchar != "乘" && firchar != "除" && lastchar != "除";
}
//计算
static void SetValue(string num1)
{
List<double> array = new List<double>();
List<string> sign = new List<string>();
num1 = num1.Replace(‘加‘, ‘+‘).Replace(‘减‘, ‘-‘).Replace(‘乘‘, ‘*‘).Replace(‘除‘, ‘/‘);
string tempCap = "";
char[] MyChar = num1.ToCharArray();
for (int i = 0; i < MyChar.Length; i++)
{
if (MyChar[i].ToString() == "+" || MyChar[i].ToString() == "-" || MyChar[i].ToString() == "*" || MyChar[i].ToString() == "/")
{
array.Add(Convert.ToDouble(tempCap));
tempCap = "";
sign.Add(MyChar[i].ToString());
}
else
{
if (i == MyChar.Length - 1)
{
tempCap += MyChar[i].ToString();
array.Add(Convert.ToDouble(tempCap));
}
else
{
tempCap += MyChar[i].ToString();
}
}
}
double resultTemp = 0;
for (int i = 0; i < sign.ToArray().Length; i++)
{
if (sign[i] == "*")
{
resultTemp = array[i] * array[i + 1];
array[i] = resultTemp;
array.Remove(array[i + 1]);
sign.Remove(sign[i]);
resultTemp = 0;
i--;
}
else if (sign[i] == "/")
{
resultTemp = array[i] / array[i + 1];
array[i] = resultTemp;
array.Remove(array[i + 1]);
sign.Remove(sign[i]);
resultTemp = 0;
i--;
}
}
for (int i = 0; i < sign.ToArray().Length; i++)
{
if (sign[i] == "+")
{
resultTemp = array[i] + array[i + 1];
array[i] = resultTemp;
array.Remove(array[i + 1]);
sign.Remove(sign[i]);
resultTemp = 0;
i--;
}
else if (sign[i] == "-")
{
resultTemp = array[i] - array[i + 1];
array[i] = resultTemp;
array.Remove(array[i + 1]);
sign.Remove(sign[i]);
resultTemp = 0;
i--;
}
}
double answ = array[0];
array.Clear();
sign.Clear();
tempRe += num1.Replace(‘加‘, ‘+‘).Replace(‘减‘, ‘-‘).Replace(‘乘‘, ‘*‘).Replace(‘除‘, ‘/‘) + "= " + answ + "\n";
GetKeyRead("等于" + answ);
}
}
}
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原文地址：http://www.cnblogs.com/UstimdanKulma/p/5918190.html
