public string isValidUser(string name, string password) // a function to check if admin exists
{
for (int i = 0; i < allUsers.Count; i++)
{
MailUser user = (MailUser)allUsers[i];
if (user.getPin() == password && user.getName() == name)
{
return("admin"); //only if admin exists
}
}
//if its not admin,check if its a user
users_manager check = users_manager.get_instance; //creating object of another class
string a = check.isValidUser(name, password); //calling a function of class (line99)
return(a); //returning string
}