Total SubTrees with given sum

#1

One test case is not working. Please tell me what is the problem with my code.
Here is the link to my code-

#2

this is giving wrong ans because
suppose string is
67 34 …

but you are considering only one digit of number 6 then space then 4 and so on

hence it will give you wrong ans

Correct way
extract tokens from string using strtok
and then build tree