Question

name an error present in the following pseudocode. start declarations global num merchcost output \enter purchase total: \ input merchcost calculatesalestax() output \please pay \, (merchcost + salestax) stop calculatesalestax() declarations num salestax num taxrate = .08 salestax = taxrate * merchcost return a. the main program declares only global variables. b. the module attempts to use a variable that is out of scope. c. the main program attempts to use a variable that is out of scope. d. the module is never called by the main program.

Explanation:

The salesTax variable is declared and calculated within the calculateSalesTax() module. In the main program, when trying to use salesTax in the output statement output "Please pay ", (merchCost + salesTax), the variable salesTax is out - of - scope as it is a local variable to the calculateSalesTax() module and not properly passed back or declared globally in a way that the main program can access it.

Answer:

c. The main program attempts to use a variable that is out of scope.