CS202 6- ‹#›
Relational/Equality Operators
nThe next set of operators we will examine are the relational and equality operators
nThese should be overloaded as non-members as either the first or second operands could be a non-class object:  string < literal,  literal < string,  string < string
nNeither operand is modified, so all class objects should be passed as constant references.
nThe residual value should be a bool, however an int will also suffice, returned by value.
nIf overloaded as a member -- make sure to specify them as a const member, for the same reasons as discussed earlier.