1.  C# Program Structure

a.  Find the errors in the following program

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

class Program
{
    private decimal number;
    public void function()
    {
        number = 1.23;
    }
    static void main(string[] args)
    {
        Program p;
        p.function();
    }
}


2.  Arrays, strings, expressions

a.  Arrays

T/F  int[ , , ] array declares a 3 dimensional array

b.  Strings

What is the output?
string str = "hello";
str.Replace ("l", "L");
Console.WriteLine(str);

c.  Expressions

When would you use a Regex object instead of a string?
a.  Regex is derived from string so it is easier to use.
b.  Regex performs complex operations on strings.
c.  Regex is a more comprehensive string comparer.
d.  Regex uses the IEnumerator class to implement parsing.


3.  File i/o, console i/o

a.  File i/o
    How can you tell if a file exists or not?

b.  Console i/o
    T/F  You must use the 'using System;' library to access a console object.


4.  Collections and arraylists

a.  Collections
    List 4 common collection classes

b.  ArrayList
    Show how to get an item out of an ArrayList


5.  Properties, Indexers and Indexed Properties

a.  convert the following function to a property

    public string getName()
    {  
       return Name;
    }

b.  Show how to write an indexer to access a class array element

    
6.  Operator overloading, Converstions, reflection

a.  Operator overloading
    Show how to overload the '%' operator.

b.  Conversion operator
    Show how to write a user conversion operator.

c.  Reflection
    Show how to use reflection.

7.  Inheritance, Polymorphism, interfaces

a.  Inheritance
    Show the syntax to derive a class from a base class

b.  Polymorphism
    What does the keyword 'virtual' do?
    a).  Allows user to override a function
    b).  Forces the user to override a function
    c).  Make the class where it is used abstract
    d).  It is a nessary declaration in an interface

c.  Interfaces
    T/F  C# permits inheritance from multiple interfaces

8.  Generics
a.  Convert the following function to a generic function:

    void Swap(ref int a, ref int b)
    {
	int t = a;
      	a = b;
      	b = t;
    }