Chapter 10 Quick Reference

Chapter 10 Quick Reference
To Do this
Declare an array
variable
Write the name of the element type, followed by square brackets,
followed by the name of the variable, followed by a semicolon.
For example:
bool[] flags;
Create an instance of
an array
Write the keyword new, followed by the name of the element type,
followed by the size of the array between square brackets. For
example:
bool[] flags = new bool[10];
Initialize the elements
of an array instance
to specific values
Write the specific values in a comma-separated list between curly
brackets. For example:
bool[] flags = { true, false, true, false };
Find the number of
elements in an array
Use the Length property. For example:
int noOfElements = flags.Length;
Access a single array
element
Write the name of the array variable, followed by the integer index
of the element between square brackets. Remember, array
indexing starts at zero, not one. For example:

bool initialElement = flags[0 ];
Iterate through the
elements of an array
or collection
Use a for statement or a foreach statement. For example:
bool[] flags = { true, false, true, false };
for (int i = 0; i != flags.Length; i++)
{
Console.WriteLine(flags[i ]);
}

foreach (bool flag in flags)
{
Console.WriteLine(flag);
}
Find the number of
elements in a
collection
Use the Count property. For example:
int noOfElements = flags.Count;