In "Dungeons & Dragons", and similar role-playing games, dice with different numbers of sides are used to determine the outcomes of events throughout the game. There are different dice for different occasions: 4-sided, 6-, 8-, 10-, 12-, and 20-sided dice are common. A required roll is typically designated d where is the number of dice to throw and is the number of sides on those dice. For example, 2d6 means throw two 6-sided dice and add the results, and 1d12 means throw one 12-sided die. This lab requires you to write a program to read in the number of sides on the dice to throw, and then simulate throwing two of them and summing the result, three times in total.

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 interesttype 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 interesttype 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).