Answers to Chapter 1 Review Questions

   


Chapter 1

1:

Give a reason why computers pervade our society today.

A:

Computers are versatile and can be programmed to solve a wide range of problems.

2:

What are the differences between being a computer programmer and an end user?

A:

The computer programmer uses a programming language to write the exact instructions that make up the computer program the end user will apply.

3:

Give a brief description of how the world is viewed from an object-oriented programmer's point of view.

A:

The object-oriented world consists of objects that interact to solve various tasks.

4:

What are the two basic parts of a computer?

A:

Hardware and software.

5:

What is software?

A:

Software consists of instructions the computer executes.

6:

How does the computer user interact with the computer?

A:

The user provides data (called input) to the computer (via a keyboard or something similar) which the computer processes. The computer responds to the user with output (for example, via the screen).

7:

What is a processor?

A:

The processor is an important piece of computer hardware that executes a computer program's instructions.

8:

Name the two computer memory categories. Briefly describe each one of them.

A:

Auxiliary memory and main memory. Auxiliary memory stores data permanently, whereas the main memory represents temporary storage containing the running program parts and its associated intermediate calculation results.

9:

What data would be involved in calculating the average monthly rainfall in New York during year 2000?

A:

The total rainfall during year 2000, which then can be divided by 12 to find the average.

10:

What are bits and bytes?

A:

A bit can have one of two values, often referred to as 1 and 0. A byte consists of eight bits.

11:

How many different numbers can be represented by one byte?

A:

Each of the eight bits in a byte can represent two values. So a byte can represent 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 256 different numbers.

12:

How does the main memory organize the data it is storing?

A:

Through a list of numbered locations called bytes. Each location has an address for easy reference.

13:

What are files used for?

A:

To permanently store different kinds of data.

14:

What is a source program?

A:

A source program consists of text with high-level instructions that are translated into machine level instructions executed by the computer. The source program is kept in a source program file.

15:

How can you recognize a C# source program file?

A:

A C# source program file has the extension .cs (for c sharp) as in YourProgram.cs.

16:

Describe what a compiler does?

A:

A compiler translates the high-level instructions of the source program file into low-level machine language that can be executed by the computer processor.

17:

List a few of the services provided by .NET

A:

Among many other services, .NET:

  • Contains an execution engine that can execute the MSIL instructions that represent the high-level instructions of a C# program

  • Holds a vast selection of pre-written program parts that you can utilize in your programs

  • Manages the computer memory used by your computer program

18:

What is MSIL? How does it improve the .NET architecture over previous architectures?

A:

Microsoft Intermediate Language (MSIL) provides a middle layer between the high-level source program and the low-level machine language and is thereby able to decouple these two parts.


   


C# Primer Plus
C Primer Plus (5th Edition)
ISBN: 0672326965
EAN: 2147483647
Year: 2000
Pages: 286
Authors: Stephen Prata

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