1. CSCI 3328 Object Oriented Programming in C# Chapter 3: Introduction to Classes and Objects – Exercises
UTPA – Fall 2012
This set of slides is revised from lecture slides of Prof. John Abraham. -- Xiang Lian

2. Objectives In this chapter, you will
Do some exercises about classes and objects in C#

3. Multiple Choices A class can have __________ object(s).
A. only 1 B. only 2 C. between 1 and 3 D. more than 1
Every class declaration contains keyword ____ followed immediately by the class’s name
A. keyword B. public C. void D. class
Which of the following statements is true to create a new object of class MyClass in C#?
A. MyClass obj = new MyClass ()
B. MyClass obj = new MyClass ;
C. MyClass *obj = new MyClass ();
D. MyClass obj = new MyClass ();
C# provides the following simple types for storing real numbers except for ________.
A. real B. float C. double D. decimal

4. Multiple Choices (cont'd)
Which of the following statements is the correct usage of Convert in C#?
A. Console.Convert();
B. Convert.ToDecimal();
C. Convert.ReadLine();
D. Convert.ToDecimal(Console.ReadLine());
Return type _______indicates that a method will not return any information when it completes its task.
A. NULL B. Nil C. Void D. void
Which of the following statements is correct?
A. Console.WriteLine({0:C}, 3);
B. Console. Write("Hello world!");
C. Console.ReadLine(x);
D. Console.Read(x);

5. True or False Statements
1. By convention, method names begin with a lowercase first letter and all subsequent words in the name begin with a capital first letter
2. A property's get accessor enables a client to modify the value of the instance variable associated with the property
3. Empty parentheses following a method name in a method declaration indicate that the method does not require any parameters to perform its task

6. True or False Statements (cont'd)
4. After defining a property, you can use it the same way you use a method, but with empty parentheses, because no arguments are passed to a property
5. Variable declared in the body of a particular method are known as instance variables and can be used in all methods of the class
6. A property declaration must contain both a get accessor and a set accessor