strtok Problem

On the first call to strtok, the function skips leading delimiters and returns a pointer to the first token in the string.  Then it puts a NULL in and carries on from where it left off.

Using the this string with delimiters is fine…

WHITE|GREEN|BLUE|YELLOW|ORANGE|PINK|RED|BLACK

I get all the tokens out in order as expected.  However I have to deal with situations where some of the fields are blank, so there will be two fence characters side by side.  And I want to know which fields are empty.

So with a string like this…

|GREEN||YELLOW|ORANGE|PINK||BLACK

I want to get this result…

Field 1:
Field 2: GREEN
Field 3:
Field 4: YELLOW
Field 5: ORANGE
Field 6: PINK
Field 7:
Field 8: BLACK

I know that my records should have 8 fields each.  But I need to know which are empty, even the ones at the start and the end.