1. Write a program that prompts the user for two integers and then prints 
 	The sum 
 	The difference 
 	The product 
 	The average 
 	The distance (absolute value of the difference) 
 	The maximum (the larger of the two ) 
 	The minimum (the smaller of the two) 
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2.  Write a program that 
 	prompts the user for a measurement in meters 
 	and then converts it into miles, feet and inches. 
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3. Write a program that prompts the user for a radius and then prints 
 	The area and circumference of the circle with that radius 
 	The volume and surface area of the sphere with that radius 
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4. Write a program that asks the user for the lengths of the sides of a rectangle. Then print 
 	The area and perimeter of the rectangle
 	The length of the diagonal (use the Pythagorean theorem) 
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5. (Giving change) Implement a program that directs a cashier how to give change. 
The program has two inputs: 
 	the amount due and 
 	the amount received from the customer. 
Compute the difference, and compute the 
 	dollars, 
 	quarters, 
 	dimes, 
 	nickels, and 
 	pennies 
that the customer should receive in return. 

Hint: 
1.	First transform the difference into an integer balance, denominated in pennies. 
2.	Then compute the whole dollar amount. 
3.	Subtract it from the balance. 
4.	Compute the number of quarters needed. 
5.	Repeat for dimes and nickels. 
6.	Display the remaining pennies. 
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6. Write a program that asks the user to input 
 	The number of gallons 
 	The fuel efficiency 
 	The price per gallon 
Then print how far the car can go with the gas in the tank and print the cost per 100 miles.
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7. Write a program that reads two times in military format (0900, 1730) and prints the number of hours and minutes between the two times. 

Here is a sample run. 

  Please enter the first time: 0900
  Please enter the second time: 1730
  8 hours 30 minutes

Extra credit if you can deal with the case that the first time is later than the second time: 

  Please enter the first time: 1730
  Please enter the second time: 0900
  15 hours 30 minutes
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8. Write a program that transforms numbers 

  1, 2, 3, ..., 12 

into the corresponding month names 

  January, February, March, ..., December 

Hint: 

1.	Make a very long string "January February Mar…" in which you add spaces such that each month name has the same length. 
2.	Then use substring to extract the month you want. 
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