Lab 6.1 — Vaccination — Take 2 (Vaccination) (Approval)

Modify Program 6.1 to use the && operator instead of the || operator

Sample Test Run #1

Sample Test Run #2

Here is a sample execution of the program.
User input is in bold. Your program should replicate the prompts and output:

Lab 6.2 — Vaccination — Take 3 (Vaccination)

Modify Program 6.1 (or Lab 6.1) so that the gender of the patient (M/F) is entered, and taken into account, as well. The vaccine should NOT be administered to those patients who match one of the categories in the following table ( a '-' means that no distinction is made for that column):

Age	Gender
Under 3	-
20-45	F
Over 65	-

Sample Test Run #1

Sample Test Run #2

Here is a sample execution of the program.
User input is in bold. Your program should replicate the prompts and output:

Lab 6.3 — Divisibility Again (Divisibility)

Write a program containing a method boolean divisibleBy17(int n) that returns true if n is divisible by 17 and falseotherwise. Your main should prompt the user for an integer, pass it to the method and print the returned boolean value. (This is a variation of Program 3.1).

Sample Test Run #1

Sample Test Run #2

Lab 6.4 — Divisibility Again — Take 2 (Divisibility)

Rewrite Lab 6.4 so that the method is now bool isDivisible(int n, int m). isDivisible returns true if n is divisible by m. Again your main should read in the two numbers, pass them to the method and print the result.

Sample Test Run #1

Sample Test Run #2

Lab 6.5 — Evenness (Evenness) (Approval)

Write a program that contains two methods:

• the isDivisible method of Lab 6.4
• a method, boolean isEven(int n), that returns whether n is even or not
  • isEven must be written using isDivisible
    • (This is an example of method composition discussed in the notes)

Your main should prompt for the number, pass it (to isEven, and print the result.

Sample Test Run #1

Sample Test Run #2

Lab 6.6 — Fun with Numbers (InfoOf3) (Approval)

Write a program that reads three numbers from the file numbers.text, and then prints out some information about the relationships between the numbers-- whether they are all equal, in ascending order, in descending order, and so on. To determine these relationships, write the following boolean-valued functions:

• boolean allAreEqual(int a, int b, int c);
• boolean twoAreEqual(int a, int b, int c); // false if all three are equal
• boolean noneAreEqual(int a, int b, int c);
• boolean areAscending(int a, int b, int c); // true if a <= b <= c
• boolean areDescending(int a, int b, int c); // true if a >= b >= c
• boolean strictlyAscending(int a, int b, int c); // true if a < b < c
• boolean strictlyDescending(int a, int b, int c); // true if a > b > c

Try to "talk boolean"

Sample Test Run