Chapter 6 Ch06Ex2

dampyr · November 4th, 2011, 12:10 PM

Hello,i am trying to learn basic of C# using this book,and i have one question

for example: int maxval=intArray[0],author says that maxval returns the higest number in array.Generally,i want to now what number in brackets means [0]?
What,if for example i put in brackets other number (1,2,4,5...) ?.
Thanks in advance
complete code:

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

namespace Ch06Ex02
{
class Program
{
static int MaxValue(int[] intArray)
{
int maxVal = intArray[0];
for (int i = 1; i < intArray.Length; i++)
{
if (intArray[i] > maxVal)
maxVal = intArray[i];
}
return maxVal;
}

static void Main(string[] args)
{
int[] myArray = { 1, 8, 3, 6, 2, 5, 9, 3, 0, 2 };
int maxVal = MaxValue(myArray);
Console.WriteLine("The maximum value in myArray is {0}", maxVal);
Console.ReadKey();
}
}
}

Globox · November 4th, 2011, 04:49 PM

The number in square brackets identifies the position in the array.

[0] is position 1
[1] is position 2
[7] is position 8 etc.

Run this to see what I mean.

Cheers

Globox

Code:

static void Main(string[] args)
        {
            int[] intArray = { 1, 3, 13, 7, 9 };

            int maxValue = 0;

            for (int i = 0; i < intArray.Length; i++)
            {
                maxValue = (intArray[i] > maxValue) ? intArray[i] : maxValue;

                Console.WriteLine("");
                Console.WriteLine("i = " + i.ToString() + "      intArray[i] = " + intArray[i]);

            }

            Console.WriteLine("");
            Console.WriteLine("Maximum value in intArray = " + maxValue.ToString());
            Console.ReadLine();
        }

Quote:

Originally Posted by dampyr

Hello,i am trying to learn basic of C# using this book,and i have one question

for example: int maxval=intArray[0],author says that maxval returns the higest number in array.Generally,i want to now what number in brackets means [0]?
What,if for example i put in brackets other number (1,2,4,5...) ?.
Thanks in advance
complete code:

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

namespace Ch06Ex02
{
class Program
{
static int MaxValue(int[] intArray)
{
int maxVal = intArray[0];
for (int i = 1; i < intArray.Length; i++)
{
if (intArray[i] > maxVal)
maxVal = intArray[i];
}
return maxVal;
}

static void Main(string[] args)
{
int[] myArray = { 1, 8, 3, 6, 2, 5, 9, 3, 0, 2 };
int maxVal = MaxValue(myArray);
Console.WriteLine("The maximum value in myArray is {0}", maxVal);
Console.ReadKey();
}
}
}

dampyr · November 5th, 2011, 03:17 PM

I googled the answer:

In the heap, the array is a block of memory made of all the elements together. Each element in the array is identified by a zero-based index number: 0, 1, 2, ... and so on. An attempt to access an index outside the 0..length-1 range will fail with a runtime exception. When first created, all of the elements in the array are set to zero

This is from Java language,but principle is the same:
http://codingbat.com/doc/array.html

dampyr · November 5th, 2011, 03:19 PM

Regarding me,a lock can be placed