using System;

public class MainClass {
    public static void Main(string[] args) {
        string sSentence = "";
        for (; ; ) {
            Console.WriteLine("Enter a string");
            string sLine = Console.ReadLine();
            if (IsTerminateString(sLine)) {
                break;
            }
            sSentence = String.Concat(sSentence, sLine);
            Console.WriteLine("
You've entered: {0}", sSentence);
        }
    }
    public static bool IsTerminateString(string source) {
        string[] sTerms = {"EXIT","exit","QUIT","quit"};
        foreach (string sTerm in sTerms) {
            if (String.Compare(source, sTerm) == 0) {
                return true;
            }
        }
        return false;
    }
}

    

   
 
using System;

public class MainClass {
    static void Main() {
        Console.WriteLine("Enter command:");
        string resp = (Console.ReadLine()).ToLower();
        switch (resp) {
            case "a":
                Console.WriteLine("Doing Task A");
                break;
            case "b":
                Console.WriteLine("Doing Task B");
                break;
            case "c":
                Console.WriteLine("Doing Task C");
                break;
            default:
                Console.WriteLine("Bad choice");
                break;
        }
    }
}

    

   
 
using System;

public class MainClass {
    static void Main() {
        string resp;
        while (true) {
            Console.WriteLine("Menu

1 - Task A");
            Console.WriteLine("2 - Task B");
            Console.WriteLine("E - E(xit)");
            resp = (Console.ReadLine()).ToLower();
            if (resp == "e") {
                break;
            }
        }
    }
}

    

   
 
using System;

public class MainClass {
    static void Main() {
        string resp;
        do {
            Console.WriteLine("Menu

1 - Task A");
            Console.WriteLine("2 - Task B");
            Console.WriteLine("E - E(xit)");
            resp = (Console.ReadLine()).ToLower();
        }
        while (resp != "e");
    }
}

    

   
 
using System;

public class MainClass {
    static void Main() {
        string resp;
        Console.WriteLine("Enter command ('x' to end):");
        while ((resp = (Console.ReadLine()).ToLower()) != "x") {
            switch (resp) {
                case "a":
                    Console.WriteLine("Doing Task A");
                    break;
                case "b":
                    Console.WriteLine("Doing Task B");
                    break;
                default:
                    Console.WriteLine("Bad choice");

                    break;
            }
        }
    }
}

    

   

/*
Learning C# 
by Jesse Liberty

Publisher: O'Reilly 
ISBN: 0596003765
*/
public class AssignedValues {
    static void Main( )
    {
       int myInt;
       //other code here...
       myInt = 7;  // assign to it
       System.Console.WriteLine("Assigned, myInt: {0}", myInt);
       myInt = 5;
       System.Console.WriteLine("Reassigned, myInt: {0}", myInt);
    }
 }

           
          

   
 

using System;
using System.Collections.Generic;
using System.Text;

class Program {
    static void Main(string[] args) {
        (new Program()).run();
    }

    public void run() {
        double dailyRate = readDouble("Enter your daily rate: ");
        int noOfDays = readInt("Enter the number of days: ");
        writeFee(calculateFee(dailyRate, noOfDays));
    }

    private void writeFee(double p) {
        Console.WriteLine("The consultant's fee is: {0}", p * 1.1);
    }

    private double calculateFee(double dailyRate, int noOfDays) {
        return dailyRate * noOfDays;
    }

    private int readInt(string p) {
        Console.Write(p);
        string line = Console.ReadLine();
        return int.Parse(line);
    }

    private double readDouble(string p) {
        Console.Write(p);
        string line = Console.ReadLine();
        return double.Parse(line);
    }
}