Pre-Lab Assignment: Lab 6

1. Rewrite the following cascading if statement to a switch statement.

   System.out.println("Enter size box you want");
   int boxSize = scan.nextInt();
   double price;
   if (boxSize == 10)
   {
      System.out.println("Small");
      price = 2.5;
   }
   else if (boxSize == 20) 
   {
      System.out.println("Medium");     
      price = 3.75;
   }
   else if (boxSize == 30)
   {
      System.out.println("Large");
      price = 5.0;
   }
   else
   {
      System.out.println ("Not a valid size.");
      price = -1;
   }
   if (price > 0)
      System.out.println("Price is $" + price);
   else
      System.out.println("Sorry, we don't have that size");
   

2. Fix the following code fragment.

   if(total == MAX)
   	if(total < sum)
   		System.out.println("total == MAX and sum total < sum");
   else
   	System.out.println("total is not equal to MAX");
   

3. Rewrite each condition below in valid Java syntax (give a boolean expression):
   1. x > y > z

   2. neither x nor y is equal to 0

   3. both x and y are equal to 0

   4. x is greater than y but less than z

4. Use truth tables to determine whether each pair of expressions is equivalent.
   1. NOT q OR p
      p OR NOT(q OR p)

   2. (p AND r) OR (q AND NOT r)
      (p AND q AND NOT r)