CS202   3- ‹#›
Single Inheritance
nSaying class checking : public account when defining the checking class indicates that checking is a derived class.
nThe keyword public tells the compiler that all public members of the account class remain public in the checking class (i.e., public derivation is taking place).
nThe name account tells the compiler that the checking class is derived from the account class.
nThe account class is the direct base class for checking and savings.