3.6 Solutions

  1.  
    switch (month)
{
   case 1 :
   case 3 :
   case 5 :
   case 7 :
   case 8 :
   case 10:
   case 12: length = 31;
            break;
   case 4 :
   case 6 :
   case 9 :
   case 11: length = 30;
            break;
   case 2 : if (isLeapYear)
               length = 29;
            else
               length = 28;
            break;
}

    1.  
      6

    2.  
      6
16
4

  3.  
    int testNumber = getInt("Which test");
int score = getInt("What was the score");
float weightedScore = 0;

switch(testNumber)
{
   case 1: weightedScore = score * 0.1;
           break;
   case 2:
   case 3:
   case 6: weightedScore = score * 0.2;
           break;
   case 4:
   case 5: weightedScore = score * 0.15;
           break;
}
println("A score of " + score + " on test " +
         testNumber + " gives a weighted score of " + 
         weightedScore);

  4.  
    switch (number % 10)
{
   case 0 : println("zero");
            break;
   case 1 : println("one");
            break;
   case 2 : println("two");
            break;
   case 3 : println("three");
            break;
   case 4 : println("four");
            break;
   case 5 : println("five");
            break;
   case 6 : println("six");
            break;
   case 7 : println("seven");
            break;
   case 8 : println("eight");
            break;
   case 9 : println("nine");
            break;
}

  5.  
    void setup()
{
   int year = getInt("Enter year");
   int month = getInt("Enter month");
   int day = getInt("Enter day");

   switch (month)
   {
      case 1 : print("January");
               break;
      case 2 : print("February");
               break;
      case 3 : print("March");
               break;
      case 4 : print("April");
               break;
      case 5 : print("May");
               break;
      case 6 : print("June");
               break;
      case 7 : print("July");
               break;
      case 8 : print("August");
               break;
      case 9 : print("September");
               break;
      case 10: print("October");
               break;
      case 11: print("November");
               break;
      case 12: print("December");
               break;
   }
   println(" " + day + ", " + year);
}