ok, another programming question

ok, got another one

I have a matrix

R = 0
0
2
1

I need to populate vector, c, with that will only have values for non-zero entities.

If R(sub 1) = 0 then do nothing
else
if R(sub 1) = 1 Then the entry into c is 5
else
if R(sub 1) = 2 Then the entry into c is 10


So, result for above would be

c = 10
5

Thanks in advance