How to do this in C++ ?

7. Rewrite the following expressions using the conditional operator. (Assume that all variables are declared properly.) a. if (x >= z = y) 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