[R] For each element in vector do...

[Andrej Kastrin]

Dear R useRs,

I have a vector with positive and negative numbers:
A=c(0,1,2,3,0,4,5)

Now if  i-th element in vector A is > 0, then i-th element in vector B 
is a+1
else i-th element in vector b=a (or 0)

vector A: 0 1 2 3 0 4 5
vector B: 0 2 3 4 0 5 6

What's the right way to do this. I still have some problems with for and 
if statements...

Cheers,  Andrej