JSONCPP Writing to files

Question

JSONCPP has a writer, but all it seems to do is get info from the parser and then output it into a string or a stream. How do I make it alter or create new objects, arrays,

Answer 1

AFAICT, you create objects of type Json::Value, which caters for all the JSON data-types, and pass the result to a Json::Writer (one of its derived types, to be specific), or simply to a stream.

E.g.: to write an array of three integers to a file:

Json::Value vec(Json::arrayValue);
vec.append(Json::Value(1));
vec.append(Json::Value(2));
vec.append(Json::Value(3));
std::cout << vec;