Chapter 2

Cilvako · July 1st, 2018, 07:05 AM

In chapter 2 we have the following example:

Code:

myNumber = 1;
myVar = (myNumber ++ * 10 + 1);

In the book we are told the result for myVar should be 12, but after testing it a few times I got 11 each and every time.

How is this possible? Clearly, incrementing is not working as expected.

Natured · July 7th, 2018, 03:37 PM

This seems to be a minor error, the code actually skips over the ++; operator entirely to get the desired result you can re-write this code with a simple change.

Code:

myNumber = 1;
myVar = (myNumber * 10 + 1);
myVar++;

This would yield the desired result. You can also place "++" on the Pre side instead of the Post side of the variable. (shown below)

Code:

myVar = (++myNumber * 10 + 1);

However this is interpreted as: 2 * 10 + 1 which is 21.

Hopefully this helps clear up any confusion.