Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- Exercise 4: Selection and loop statements A certain professor gives 5-point quizzes that are graded on the scale 5-A, 4-B, 3-C, 2-D, 1- F, 0-F. Write a program that accepts a quiz score as an input and prints out the corresponding grade. The input data must be a float numbers and between 0 and 5 Example Input : Quiz score: 3 Output: The grade is C. Exercise 4 Write an improved version of the future value program from Chapter 2. Your program will prompt the user for the amount of the investment, the annualized interest rate, and the number of years of the investment. The program will then output a nicely formatted table that tracks the value of the investment year by year. Your output might look something like this:arrow_forwardC++ Programming Exercise: A real estate office handles, say, 50 apartment units. When the rent is, say, $600 per month, all the units are occupied. However, for each, say, $40 increase in rent, one unit becomes vacant. Moreover, each occupied unit requires an average of $27 per month for maintenance. How many units should be rented to maximize the profit? Write a program that prompts the user to enter: a. The total number of of units. b. The rent to occupy all the units. c. The increase in rent that results in a vacant unit. d. Amount to maintain a rented unit. The program then outputs the number of units to be rented to maximize the profit.arrow_forwardC++ please - 24-hour time (also known in the U.S. as military time) is widely used around the world. Time is expressed as hours since midnight. The day starts at 0000, and ends at 2359. Write a program that converts am/pm time to 24-hour time. If the input is 2:30 pm, the output should be 1430. If the input is 12:01 am, the output should be 0001. Hints: Think of how each hour should be handled. 12:00 am -12:59 am becomes what? 8:00 am becomes what? 12:00 pm? 1:00 pm? Group the hours into cases that should be handled similarly (e.g., 1:00 am to 11:00 am are handled the same). Declare variables for hoursAmPm, minAmPm, and hours24. Note that minutes for 24-hour time remain the same as for am/pm, so no extra variable is needed. Use an if-else statement to detect each case, and set the hours24 appropriately. When outputting hour24, check if the hour is 0-9 (just check for < 10). If so, output a "0". So 7 will be output as 07. Do the same when outputting the minutes. #include…arrow_forward
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