parsing data

Question

https://code.sololearn.com/cUe1AA2AGz51
hi friends
here is my code
i am trying to parse the data between (data:) and delimiter ';'
I am getting output for this case
input: embedded data:rakesh;
expected output:rakesh
if there is no delimiter in the string it should not print the data which is after(data:)
with this code
if we give input without delimiter it should not print the data
The exact doubt and requirement is if there is no delimiter how could i know that, as there is no delimiter
so please give me suggestion.
Thank you

Answer 1

Updated
https://code.sololearn.com/cX1oqJj2WKwf

Answer 2

Thank you Sir