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// Print the current interest rate.

Console.WriteLine("Interest Rate is: {0}", SavingsAccount.GetInterestRate());

Savings Account:S1

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8849CH05.qxd  10/22/07  1:34 PM  Page 155

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// Make new object, this does NOT 'reset' the interest rate.

SavingsAccount s3 = new SavingsAccount(10000.75);

Console.WriteLine("Interest Rate is: {0}", SavingsAccount.GetInterestRate());

Console.ReadLine();

}

Figure 5-6.

Static data is allocated only once.

As you can see, when you create new instances of the SavingsAccount class, the value of the

static data is not reset, as the CLR will allocate the data into memory exactly one time. After that

point, all objects of type SavingsAccount operate on the same value.

As stated, static methods can operate only on static data. However, a nonstatic method can

make use of both static and nonstatic data. This should make sense, given that static data is

available to all instances of the type. To illustrate, update SavingsAccount with the following

instance-level members:

class SavingsAccount

{

public double currBalance;

public static double currInterestRate = 0.04;