using System;using System.Collections.Generic;delegate T NumberChangerT(T n);namespace GenericDelegateAppl {

using System;delegate void NumberChanger(int n);namespace DelegateAppl {class TestDelegate {static int num = 10;

using System.Collections.Generic;using System.Linq;using System.Text;using System;namespace InterfaceApplication {

using System;namespace first_space {class namespace_cl {public void func() {Console.WriteLine(Inside first_space);

using System;using first_space;using second_space;namespace first_space {class abc {public void func() {

using System;using first_space;using first_space.second_space;namespace first_space {class abc {public void func() {

#define DEBUG#define VC_V10using System;public class TestClass {public static void Main() {#if (DEBUG !VC_V10)

using System;using System.Text.RegularExpressions;namespace RegExApplication {class Program {private static void showMatch(string text, string expr) {

using System;using System.IO;namespace FileApplication {class Program {static void Main(string[] args) {

using System;using System.IO;namespace FileIOApplication {class Program {static void Main(string[] args) {

using System;namespace UserDefinedException {class TestTemperature {static void Main(string[] args) {

using System;class Demo {static void Main() {int a = 20, b = 70, c = 40, d = 90;Console.WriteLine({0} {1} {2} {3}, a, b, c, d);

using System;namespace MyApplication {class Factorial {public int display(int n) {int res = 1;while (n != 1) {

using System;class Program {static void Main() {string str = 1001;Console.WriteLine(Integer:+ConvertClass.Convert(str));

using System;class Program {static void Main() {string str = Hello World! Hello!;Console.WriteLine(Occurrence:+Check.CheckOccurrences(str, Hello));

using System;public class Demo {public static void Main() {int a = 0 , myWord = 1;string str = Hello World!;

using System;namespace Demo {class myApplication {static void Main(string[] args) {string str = Amit$#%;

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Demo {class MyApplication {

using System;using System.Collections.Generic;using System.Text;namespace Demo {class MyApplication {

using System;using System.Collections.Generic;using System.Text;namespace Demo {class MyApplication {