Which statement best describes the relationship between superclass and subclass types?
a. A subclass reference cannot be assigned to a superclass variable and a superclass reference cannot be assigned to a subclass variable.
b. A subclass reference can be assigned to a superclass variable and a superclass reference can be assigned to a subclass variable.
c. A superclass reference can be assigned to a subclass variable, but a subclass reference cannot be assigned to a superclass variable.
d. A subclass reference can be assigned to a superclass variable, but a superclass reference cannot be assigned to a subclass variable.
d. A subclass reference can be assigned to a superclass variable, but a superclass reference cannot be assigned to a subclass variable.
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Answer the following questions true (T) or false (F)
1. There is only one kind of parameter passing in C++, namely call-by-value. Explain. 2. The call-by-reference mechanism is specified in the function declaration and definition, using a $ between the type and the parameter.
The advantage of using __________ is that you can focus on the details of any given component without losing sight of the other component.
a. black boxes b. services c. a platform d. layers of abstraction
Semantics is the structure and order of the function and the arguments used by Excel to perform a calculation
Indicate whether the statement is true or false
Which of the following business intelligence tools performs operations on data based on formulas created by the end user?
a. Spreadsheet b. Drill-down analysis c. Online analytical processing d. Data mining