Assuming the following is the beginning of the constructor definition for class BasePlus-CommissionEmployee which inherits from class Point: BasePlusCommissionEmployee::BasePlusCommissionEmployee(string first,
String last, string ssn, double sales, double rate, double salary)
: CommissionEmployee(first, last, ssn, sales, rate)
The line beginning with a colon(:)
A) Invokes the CommissionEmployee constructor with arguments.
B) Causes a compiler error.
C) Is unnecessary because the CommissionEmployee constructor is called automatically.
D) Indicates inheritance.

Question

Quizplus · Accepted Answer

The line beginning with a colon is used to invoke the base class constructor, in this case, the CommissionEmployee constructor, with the specified arguments. This is a common practice in C++ to initialize base class members when constructing a derived class object.

Assuming the Following Is the Beginning of the Constructor Definition