Using JsonCPP to parse API requests but the code wont compile [closed] - c++

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#include<string>
#include<iostream>
#include<json/json.h>
#include<cpr/cpr.h>
using namespace std;
using namespace cpr;
int main() {
Response r = Get(Url{ "https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd" });
Json::Value data;
Json::Reader reader;
reader.parse(r.text, data);
cout << data << endl;
}
I'm trying to get print out the response {"Bitcoin" {"USD: 23000"}}.
When I just use response and cout r.text it runs perfectly. But when I use jsoncpp it says "There were build errors, would you like to run previous build?"
Build errors:
Build started... 1>------ Build started: Project: Project 1,
Configuration: Debug x64 ------ 1>Main.obj : error LNK2019: unresolved
external symbol "public: __cdecl Json::Value::Value(enum
Json::ValueType)" (??0Value#Json##QEAA#W4ValueType#1##Z) referenced in
function main 1>Main.obj : error LNK2019: unresolved external symbol
"public: __cdecl Json::Value::~Value(void)" (??1Value#Json##QEAA#XZ)
referenced in function main 1>Main.obj : error LNK2019: unresolved
external symbol "public: __cdecl Json::Reader::Reader(void)"
(??0Reader#Json##QEAA#XZ) referenced in function main 1>Main.obj :
error LNK2019: unresolved external symbol "public: bool __cdecl
Json::Reader::parse(class std::basic_string<char,struct
std::char_traits,class std::allocator > const &,class
Json::Value &,bool)"
(?parse#Reader#Json##QEAA_NAEBV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##AEAVValue#2#_N#Z)
referenced in function main 1>Main.obj : error LNK2019: unresolved
external symbol "class std::basic_ostream<char,struct
std::char_traits > & __cdecl Json::operator<<(class
std::basic_ostream<char,struct std::char_traits > &,class
Json::Value const &)"
(??6Json##YAAEAV?$basic_ostream#DU?$char_traits#D#std###std##AEAV12#AEBVValue#0##Z)
referenced in function main

Answer 1

It appears that you treat JsonCPP as a header-only library, when it's enough to simply #include that header file.
However, looks like https://github.com/open-source-parsers/jsoncpp contains some source code, too. So you should probably build that library and link it.