... interest section, for example,consider the following test:mPrincipal < 0 || mPrincipal > nMaximumInterestThis test changes to the following:mInterest >= 0 && mInterest <= nMaximumInterestClearly, ... a variable for numerous different values. For example,nMaritalStatusmay be 0 for unmarried, 1 for married, 2 for divorced, 3 for widowed (I think I got them all — oh, wait), or 4 for none of ... nMaximumInterestClearly, mInterest >= 0is the opposite of mInterest < 0. What may notbe so obvious is that the OR (||) operator is replaced with an AND (&&) oper-ator. This says,...