Rewrite the following expressions using the conditional operator. (Assume that all variables are declared properly.)

a. if (x >= y)

z = x - y;

else

z = y - x;

b. if (hours >= 40.0)

wages = 40 * 7.50 + 1.5 * 7.5 * (hours - 40);

else

wages = hours * 7.50;

c. if (score >= 60)

str = "Pass";

else

str = "Fail"