How to convert json object to string [Duplicate?]

[GuckTubeYT]

How to convert json object to string?
when i cout like this
json j; j["hello"] = "hi"; cout << j << endl;
its work, but when i do string like this
json j; j["hello"] = "hi"; string je = j; cout << je << endl;
i got an error message = [json.exception.type_error.302] type must be string, but is object

[nlohmann]

If you want a serialization, call j.dump() which returns a string. Otherwise, the exception tells you the problem: you cannot convert an object to a string.

[GuckTubeYT]

its work, thanks