Project: Variables 'a', 'b', 'c' and 'd' have been initialized to unknown values. Appropriately initialize the value of 'withinThree'. The value of 'withinThree' should be true if the sum of a and b is within 3 of the sum of b and c.
Example 1: a = 5, b = 4, c = 9, d = 3
the sum of a + b is 9 and the sum of c + d is 12. The difference between these values is 3, so 'withinThree' should be true.
Example 2: a = 5, b = 4, c = 9, d = 4 withinThree = false
Example 3: a = 10, b = 5, c = 6, d = 7 withinThree = true
Example 4: a = 1, b = 2, c = 8, d =5 withinThree = false
Note: If your code works for 10 test cases in a row, you can enter your e-mail address.