This is a standalone C++ JSON parser using slightly modified source from https://github.com/Microsoft/cpprestsdk
This is provided for C++ games that need a C++ JSON parser but don't want to take a full dependancy on the cpprestsdk.Just #include <json_cpp/json.h> in your C++ project then you can use cpprestsdk JSON parser as normal. No need to add any source to your project. For example:
#include <json_cpp/json.h>
...
std::error_code err;
std::wstring exampleString = L"{\"exampleName\":\"exampleValue\"}";
web::json::value jsonConfig = web::json::value::parse(exampleString, err);
The modifications from the original https://github.com/Microsoft/cpprestsdk can be seen at https://github.com/jasonsandlin/cpprestsdk/tree/json_standalone.
You can regenerate the layout of these standalone files using MakeJsonStandalone.cmd in that branch.