13.5 Focus on Software Engineering: Separating Class Specification from Implementation: 10885

Question

Write the implementation (.cpp file) of the  Accumulator class of the previous exercise. The full specification of the class is:
An data member named  sum of type integer.
A constructor that accepts no parameters. The constructor initializes the data member  sum to 0.
A function named  getSum that accepts no parameters and returns an integer.  getSum returns the value of  sum .
A function named  add that accepts an integer parameter and returns no value.  add increases the value of  sum by the value of the parameter.

Solution
Accumulator::Accumulator()
{
    sum=0;
}

int Accumulator::getSum()
{
    return sum;
}

void Accumulator::add(int theNum)
{
    sum+=theNum;
}