Closed. This question needs
details or clarity. It is not currently accepting answers.
Answer
Solution:
That's because the symbol for + is treated as white space by your browser or HTTP client! If you want to actually send the symbol + in your get request, please encode it first in your web browser.
You can try converting your C++ with tools such as this one https://www.w3schools.com/tags/ref_urlencode.ASP.
Source