Chapter 10 Quick Reference

Chapter 10 Quick Reference 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

Chapter 10 Quick Reference

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;