Assume the existence of a BankAccount class. Define a derived class, SavingsAcco
ID: 3528142 • Letter: A
Question
Assume the existence of a BankAccount class. Define a derived class, SavingsAccount that contains two instance variables: the first a double, named interestRate, and the second an integer named interestType. The value of the type variable can be 1 for simple interest and 2 for compound interest. There is also a constructor that accepts two parameters: a double that is used to initialize the interestRate variable, and a string that you may assume will contain either "Simple", or "Compound", and which should be used to initialize the type variable appropriately. There should also be a pair of functions getInterestRate and getInterestType that return the values of the corresponding data members (as double and int respectively).Explanation / Answer
The class and the corresponding derived class along with the member functions and the variables is as follows:
class SavingsAccount:public BankAccount
{
//The two instance variables of type double and int are declared.
double interestRate;
int interestType;
public:
//Declare the constructor and initialize the instance variables.
SavingsAccount(double iRate, int iType)
{
//Initialise the variable interestRate.
interestRate = iRate;
//Initialize the interestType variable according to Simple
//and Compound.
if (strcmp((iType, "Simple") == 0))
interestType = 1;
else if (strcmp((iType, "Compound") == 1))
interestType = 2;
}
//Functions and their return values.
double getinterestRate ()
{
//The values of the corresponding data member is
//returned.
return interestRate;
}
int getinterestType()
{
//The values of the corresponding data member is
//returned.
return interestType;
}
};
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