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Source Code File 13-04_makearray

13-04_makearray.c

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

int main()
{
    json_object *newobj,*jarray,*jelement;
    const char a_name[] = "hundreds";
    const char *jstring;
    int x;

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

    jarray = json_object_new_array();
    if( jarray==NULL )
    {
        fprintf(stderr,"Unable to create array\n");
        exit(1);
    }

    for( x=100; x<901; x+=100 )
    {
        jelement = json_object_new_int(x);
        json_object_array_add( jarray, jelement );
    }
    json_object_object_add( newobj, a_name, jarray );

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

    return(0);
}

Output

New object created:
{
  "hundreds":[
    100,
    200,
    300,
    400,
    500,
    600,
    700,
    800,
    900
  ]
}