using the if function

I'm currently working through Programming with R, and I can't seem to make my "if" function work on a vector with length > 1. The book says to use the "any" function as "if" has to evaluate a single TRUE or FALSE.

I have written:

[1] 2 1 0 -1 -2

Can anyone help point out my mistake?


it worked.
is true

so num signs got flipped.
the first value that was -2 is now 2

Thanks so much for such a quick reply! I wasn't using my brain, apologies. I thought it should return 2,1,0,1,2 but I see now why that's not the case. Thanks :blush:

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