4.2-4.5

Write an if/else statement that compares the variable age with 65, adds 1 to the variable seniorCitizens if age is greater than or equal to 65, and adds 1 to the variable nonSeniors otherwise.

if (age >=65) seniorCitizens++; elsenonSeniors++;

Assume that the variables gpa, deansList and studentName, have been declared and initialized . Write a statement that both adds 1 to deansList and prints studentName to standard out if gpa exceeds 3.5.

if (gpa > 3.5) { deansList++; cout << studentName; }

Assume that isIsosceles is a bool variable , and that the variables isoCount, triangleCount, and polygonCount have all been declared and initialized . Write a statement that adds 1 to each of these count variables (isoCount, triangleCount, and polygonCount) if isIsosceles is true .

if (isIsosceles==true) { isoCount++; triangleCount++; polygonCount++; }

Write a conditional that decreases the variable shelfLife by 4 if the variable outsideTemperature is greater than 90.

if (outsideTemperature > 90) shelfLife -= 4;

Write an if/else statement that compares the value of the variables soldYesterday and soldToday, and based upon that comparison assigns salesTrend the value -1 or 1.-1 represents the case where soldYesterday is greater than soldToday; 1 represents the case where soldYesterday is not greater than soldToday.

if (soldYesterday>soldToday) salesTrend=-1; else salesTrend=1;

Write a conditional that assigns 10,000 to the variable bonus if the value of the variable goodsSold is greater than 500,000.

if(goodsSold > 500000) bonus = 10000;

Online Book Merchants offers premium customers 1 free book with every purchase of 5 or more books and offers 2 free books with every purchase of 8 or more books. It offers regular customers 1 free book with every purchase of 7 or more books, and offers 2 free books with every purchase of 12 or more books.Write a statement that assigns freeBooks the appropriate value based on the values of the bool variable isPremiumCustomer and the int variable nbooksPurchased.

if(nbooksPurchased > 4){ if(isPremiumCustomer){ freeBooks = 1; if(nbooksPurchased > 7){ freeBooks = 2; } }else{ freeBooks = 0; if(nbooksPurchased > 6){ freeBooks = 1; } if(nbooksPurchased > 11){ freeBooks = 2; } } }else{freeBooks = 0;}