public UserService(emailservice service)
public void getuserdetails(){Console.WriteLine("Hello 1");}
public void autheticateuser(){
Console.WriteLine("Hello 2");
emailservc.sendemailtoteamlead();
public class emailservice
public void sendemailtoteamlead(){Console.WriteLine("Hello 3");}
public void sendemailtomanager(){Console.WriteLine("Hello 4");}
public static void Main()
emailservice emailservc=new emailservice();
UserService usr=new UserService(emailservc);
Console.WriteLine("Hello 5");