Thread: parsing delimited strings

I am trying to write an ANSI C++ compatible routine to parse a string such as the following that is delimited by a comma(,)
123,456,abc,,def
Into
Field1=123
Field2=456
Field3=abc
Field4=
Field5=def

I could use strtok, but it does not handle an empty token and
returns Field4=def.

I know that I could use some character by character logic to
pick off the values, but I'm hoping there is something better
available, while still using ANSI C++ standard code.

Please help!!

You can try using the string class with the algorithm function templates. These provide all you need to do that kind of stuff (find, count...).

Salem:

Just out of curiosity, what value does endp + 1 have the first time through your for loop? Since endp is initialized to NULL and the value isn't changed until after the embedded if statement concludes is NULL + 1 a legal statement? The same would hold for the line:

int num = p - endp - 1;

the first time through the loop. is p - NULL - 1 a legal statement. I thought NULL was defined as 0 which is different from the integer value zero making both of these statements undefined, correct? (asked meekly)