What is the meaning of “exclusive” and “inclusive” when describing number ranges?

The following function prints the powers of 2 from 1 through n (inclusive).

This means that the function will compute 2^i where i = 1, 2, ..., n, in other words, i can have values from 1 up to and including the value n. i.e n is Included in Inclusive

If, on the other hand, your book had said:

The following function prints the powers of 2 from 1 through n (exclusive).

This would mean that i = 1, 2, ..., n-1, i.e. i can take values up to n-1, but not including, n, which means i = n-1 is the highest value it could have.i.e n is excluded in exclusive.

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