JSONNODE was not declared in this scope

Question

I have just installed libjson from sourceforge.net . I tried executing a simple program But i get this error

‘JSONNode’ was not declared in this scope

Here is the code

#include<iostream>

#include <libjson.h>

int main()
{
    JSONNode n(JSON_NODE);
    JSONNode c(JSON_ARRAY);
    c.push_back(JSONNode("", 16));
    c.push_back(JSONNode("", 43));
    c.push_back(JSONNode("", 69));

    n.push_back(c);

    std::string jc = n.write_formatted();
    std::cout<<jc<<std::endl;

    return 0;
}

M I missing some header file ?

Did you make sure `libjson.h` was saved in the same project folder as this `.cpp` file? — David G, Aug 20 '12 at 11:58

score 2 · Answer 1 · answered Nov 20 '12 at 10:50

2

You need to disable #define JSON_LIBRARY in JSONOptions.h, otherwise libjson won't include the C++ headers.

answered Nov 20 '12 at 10:50

ArtemGr

11,684
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score 1 · Accepted Answer · answered Aug 20 '12 at 12:04

1

I see that libjson stuff is defined in the json namespace. Please try adding json:: in front of JSONNode solve the problem? Like this:

json::JSONNode n(JSON_NODE);
json::JSONNode c(JSON_ARRAY);

answered Aug 20 '12 at 12:04

Lyubomir Vasilev

3,000
17
24

didnt solve the problem . I get 'json has not been declared' error. – Vihaan Verma Aug 20 '12 at 12:11
On which line is the error? Did you place `json::` in front of the other too? – Lyubomir Vasilev Aug 20 '12 at 12:28
I tired replacing as you pointed out . It complains that 'json' has not been declared. – Vihaan Verma Aug 20 '12 at 12:51

score 0 · Answer 3 · answered Jun 21 '13 at 18:28

0

You have to make sure to build the libJson library first.

I followed the following thread and it worked great for me after having the same problem you are having:

For running the Make File: http://stackoverflow.com/a/11865407/1399434e

answered Jun 21 '13 at 18:28

se_brandon

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10
25

score 0 · Answer 4 · edited Nov 21 '13 at 15:33

0

disable the JSON_LIBRARY in JSONOptions.h

//#define JSON_LIBRARY

then compile again as below

#include "libjson.h"
using namespace libjson;

int main(int argc, char* argv[])
{

    JSONNode* pNode = NULL;
    return 0;
}

edited Nov 21 '13 at 15:33

TLama

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answered Nov 21 '13 at 15:16

user3018158

41
2

JSONNODE was not declared in this scope

4 Answers4