How to parse valueint64？

[24368247]

{"Id":"1","Sn":"0061100001","Name":"register_rpl","Version":"1.0","Timestamp":1730884535,"Payload":{"ProjectId":1849017011531812866,"FailMessage":""},"Code":200}
how to get ProjectId as valueint64？

[mbratch]

Using cJSON as-is doesn't use a 64-bit integer type (or, the 80-bit long double type). I think the reason for this is that the philosophy of cJSON is to be portable for even smaller embedded systems.

The source license for cJSON is very generous and allows you to modify it to your liking. We needed 64-bit integers on our embedded project and we simply modified it to support them.