Combining Logical Operators in Scala

Sometimes we need to combine logical operators to evaluate more complex conditions. For example:

7 >= 10 && (5 == 7 || 9 < 12) // Evaluates to false

Notice that we used parentheses to group 5 == 7 and 9 < 12 together. The computer interprets this line of code as condition1 && condition2 where:

• condition1 is 7 >= 10, which is false
• condition2 is (5 == 7 || 9 < 12), which is true

It is very important to use parentheses to tell the computer how to group the conditions together. If we change the parentheses in the example above to:

(7 >= 10 && 5 == 7) || 9 < 12 // Evaluates to true

Now the computer interprets this line of code as condition1 || condition2 where:

• condition1 is (7 >= 10 && 5 == 7), which is false
• condition2 is 9 < 12, which is true

Assignment
Follow the Coding Tutorial and let's combine some logical operators.

Hint
Look at the examples above if you get stuck.