Question 26

Why is the following function declaration invalid? double calculate_future_value(double monthly_investment, double yearly_interest_rate = 4.5, int years);

	a.	You cant code default values in function declarations.
	b.	If you code a default value for one parameter, you must code them for all parameters.
	c.	If you code a default value for one parameter, you must code them for all parameters after that parameter.
	d.	If you code a default value for one parameter, you must code them for all parameters before that parameter.

You should not use a global variable when

	a.	a function defines a local variable with the same name
	b.	the global variable is modified by a function
	c.	the global variable is defined as a constant
	d.	all of the above
	e.	a and b only

Question 28

You typically code an include guard within a header file

	a.	to prevent using directives and declarations from being coded within the file
	b.	to prevent constants, variables, and functions from being defined within the file
	c.	to prevent the compiler from including the same header file twice
	d.	all of the above
	e.	a and b only