Parsing the form [ "1", "2", "3", "4"] of data json

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int cjson_parse(char *json_data)
{
    cJSON *json,*item;
    int i;
    json=cJSON_Parse(json_data);
    if (!json)
    {
        printf("Error before: [%s]\n",cJSON_GetErrorPtr());
        return -1;
    }
    else
    {
        int size=cJSON_GetArraySize(json);
        for(i=0;i<size;i++)
        {
            item=cJSON_GetArrayItem(json,i);

           // atoi (item-> valuestring) until integer,

        }

   }

}