Chapter 8, Problem 30RQE

Program Plan Intro

Array:

An array is a data structure which stores multiple values of same types of data; the array values are stored in continuous memory locations.

• Size of an array has been declared inside a square bracket, which is named as size declarator.
• The size declarator must be declared as an integer with a value greater than “0” and the number inside the brackets represents the number of elements that the array can hold.

Syntax:

Syntax to declare an array,

data_type array_name[size_declarator];

Structure array:

• The structure needs an array if the items needs to be grouped together.
• Array is a “derived” data type and it contains similar elements.
• The array index starts with “0”.
  • If the size of the array is 4, then the index values are “0”, “1”, “2”, and “3”.

Syntax:

struct_name array_name[size];

Example:

// Structure array declaration

Book name[20];

Explanation:

“Book” is a structure name, “name” is an array name and the value “20” is the “size” of the array.

Array named “forSale” to hold 35 “Car” structure:

The below is the declaration statement of the array named “forSale” to hold “35” cars structure with the first three elements defined:

/* array named forSale to hold 35 car structure with first three values initialized. */

Car forSale[35] = { Car("Ford ", "Taurus  ",  2002, 21000),

Car("Honda", "Accord  ",  2001, 11000),

Car("Jeep ", "Wrangler",  2004, 24000) };

Explanation:

• “Car” is a structure name, “forSale” is an array name and the value “35” is the size of the array.
• The above array is defined hold first three values that are given.