cJSON学习

#include <stdio.h>
#include <stdlib.h>
#include "cjson/cJSON.h"
	
int main(void)
{
	char *cjson_str = NULL;
	cJSON * root =	cJSON_CreateObject();     //父对象
	cJSON * item =	cJSON_CreateObject();     //子对象
		
	cJSON_AddItemToObject(root, "rc", cJSON_CreateNumber(0));//根节点下添加
	cJSON_AddItemToObject(root, "operation", cJSON_CreateString("CALL"));
	cJSON_AddItemToObject(root, "service", cJSON_CreateString("telephone"));
	cJSON_AddItemToObject(root, "text", cJSON_CreateString("打电话给张三"));
	cJSON_AddItemToObject(root, "semantic", item);//root节点下添加semantic节点
	cJSON_AddItemToObject(item, "slots", next);//semantic节点下添加item节点
	cJSON_AddItemToObject(next, "name", cJSON_CreateString("张三"));//添加name节点
	return 0;
}
//输出：
{
    "rc":   0,
    "operation":    "CALL",
    "service":  "telephone",
    "text": "打电话给张三",
    "semantic": {
        "slots":    {
            "name": "张三"
        }
    }
}