Hello there!

I am going to post all typos and invalid characters in the book in this thread which I find while reading it.

1) Not sure if I'm the only person who noticed, on page 42, 49 and maybe somewhere else in the book decrement '--' operator appears on page as '~DH'.
2) On page 50 as well as in the source code for the lab, I found "foeach over an array of integers" instead of "foreach over an array of integers", e.g. 'r' is missing from the word.

It's not a problem at all, but maybe should be corrected in future editions of the book.

oleksiypavlenko:
Yes,
I noticed that too, look in this place for mistakes before you add more mistakes that you find, may be are already in here : http://www.wrox.com/WileyCDA/WroxTit...Cd-ERRATA.html

Regards

Sorry, cocis48, did not realise that. Thanks!

on page 23 there is one more "Console.Writeline" with the small "l"
Apparently some wrong text editing software was used for this book - almost every "WriteLine" is misspelled and so many "--" have come out wrong.

on page 1:

"as you work toward your MCPD certification"

I believe should be

"toward your MCSD certification"

because the topic is the current MCSD 70-483 certification and not some future MCPD certification.

I am not sure but I think the code is incorrect in "sizeof"(type)) in some of these. Please see below:

// declare some numeric data types
int myInt;
double myDouble;
byte myByte;
char myChar;
decimal myDecimal;
float myFloat;
long myLong;
short myShort;
bool myBool;

// assign values to these types and then
// print them out to the console window
// also use the sizeOf operator to determine
// the number of bytes taken up be each type

myInt = 5000;
Console.WriteLine("Integer");
Console.WriteLine(myInt);
Console.WriteLine(myInt.GetType());
Console.WriteLine(sizeof(int));
Console.WriteLine();

myDouble = 5000.0;
Console.WriteLine("Double");
Console.WriteLine(myDouble);
Console.WriteLine(myDouble.GetType());
Console.WriteLine(sizeof(double));
Console.WriteLine();

myByte = 254;
Console.WriteLine("Byte");
Console.WriteLine(myByte);
Console.WriteLine(myByte.GetType());
Console.WriteLine(sizeof(byte));
Console.WriteLine();

myChar = 'r';
Console.WriteLine("Char");
Console.WriteLine(myChar);
Console.WriteLine(myChar.GetType());
Console.WriteLine(sizeof(byte)); shouldn't this be char?
Console.WriteLine();

myDecimal = 20987.89756M;
Console.WriteLine("Decimal");
Console.WriteLine(myDecimal);
Console.WriteLine(myDecimal.GetType());
Console.WriteLine(sizeof(byte)); shouldn't this be decimal?
Console.WriteLine();

myFloat = 254.09F;
Console.WriteLine("Float");
Console.WriteLine(myFloat);
Console.WriteLine(myFloat.GetType());
Console.WriteLine(sizeof(byte)); shouldn't this be float?
Console.WriteLine();

myLong = 2544567538754;
Console.WriteLine("Long");
Console.WriteLine(myLong);
Console.WriteLine(myLong.GetType());
Console.WriteLine(sizeof(byte)); shouldn't this be long?
Console.WriteLine();

myShort = 3276;
Console.WriteLine("Short");
Console.WriteLine(myShort);
Console.WriteLine(myShort.GetType());
Console.WriteLine(sizeof(byte)); shouldn't this be short?
Console.WriteLine();

myBool = true;
Console.WriteLine("Boolean");
Console.WriteLine(myBool);
Console.WriteLine(myBool.GetType());
Console.WriteLine(sizeof(byte)) shouldn't this be bool?
Console.WriteLine();
Console.ReadLine();

}

Marsal, that is definitely the case. I have seen it myself before, but didn't post it here as it may have been included already in ERRDATA.

I looked in the errata before posting and it is not there.

Thanks for posting these. We will try to fix them in future editions. (I have to think posting here is easier than submitting addenda.)

__________________
Rod

Rod Stephens, Microsoft MVP

Essential Algorithms: A Practical Approach to Computer Algorithms

(Please post reviews at Amazon or wherever you shop!)

namespace IPAddress
{
public class IPAddress
{
private int[] ip; shouldn't it be instantiated like: private int[] ip = new int[32];

public int this[int index]
{
get
{
return ip[index];
}
set
{
if (value == 0 || value == 1)
ip[index] = value;
else
throw new Exception("Invalid value");
}

}
}

class Program
{
static void Main(string[] args)
{
IPAddress myIP = new IPAddress();

// initialize the IP address to all zeros
for (int i = 0; i < 32; i++)
{
myIP[i] = 0;
}}}