C Blog

C Programming

Tiny C Projects

C Brain Teasers

NCurses

XML and JSON

Curl

Online Training

Source Code File 13-03_moredata

13-03_moredata.c

#include <stdio.h>
#include <stdlib.h>
#include <json-c/json.h>

int main()
{
    json_object *newobj,*newdata;
    const char b_name[] = "isReal";
    const char d_name[] = "iq";
    const char i_name[] = "age";
    const char n_name[] = "smell";
    const char s_value[] = "Arthur Grockmeister";
    const char s_name[] = "username";
    const char *jstring;

    newobj = json_object_new_object();
    if( newobj==NULL )
    {
        fprintf(stderr,"Unable to create object\n");
        exit(1);
    }
    puts("New object created:");

    /* bool */
    newdata = json_object_new_boolean( (json_bool)0 );
    json_object_object_add(newobj,b_name,newdata);
    /* double */
    newdata = json_object_new_double(212.0);
    json_object_object_add(newobj,d_name,newdata);
    /* int */
    newdata = json_object_new_int(59);
    json_object_object_add(newobj,i_name,newdata);
    /* null */
    json_object_object_add(newobj,n_name,NULL);
    /* string */
    newdata = json_object_new_string(s_value);
    json_object_object_add(newobj,s_name,newdata );

    jstring = json_object_to_json_string_ext(
            newobj,
            JSON_C_TO_STRING_PRETTY
            );
    puts(jstring);

    return(0);
}

Output

New object created:
{
  "isReal":false,
  "iq":212.0,
  "age":59,
  "smell":null,
  "username":"Arthur Grockmeister"
}