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);}}
}

SpeechSynthesizer spvoice = new SpeechSynthesizer();  //语音类
spvoice.Rate = 1;　           //使用 spvoice 设置朗读频率 [范围 -10 ~ 10]
spvoice.Volume = 80;         //使用 spvoice 设置朗读音量 [范围 0 ~ 100]
spvoice.SpeakAsync("大家好，我是博主小白！");   //开始读