JSON是使用廣泛的輕量級(jí)數(shù)據(jù)交換格式，C語(yǔ)言中使用CJSON庫(kù)來(lái)解析和生成JSON數(shù)據(jù)格式。以下是一些CJSON的實(shí)例，包含了JSON對(duì)象的創(chuàng)建、JSON字符串的解析和JSON對(duì)象的訪(fǎng)問(wèn)。

//創(chuàng)建JSON對(duì)象
cJSON * root = cJSON_CreateObject();
cJSON_AddStringToObject(root, "name", "Lucy");
cJSON_AddNumberToObject(root, "age", 26);
cJSON_AddTrueToObject(root, "isStudent");
//JSON字符串解析
char * jsonString = "{\"name\":\"Tom\",\"age\":30,\"isStudent\":false}";
cJSON * root = cJSON_Parse(jsonString);
char * name = cJSON_GetObjectItem(root, "name")->valuestring;
int age = cJSON_GetObjectItem(root, "age")->valueint;
bool isStudent = cJSON_GetObjectItem(root, "isStudent")->valueint;
//JSON對(duì)象訪(fǎng)問(wèn)
cJSON * root = cJSON_CreateObject();
cJSON * hobbyArray = cJSON_CreateArray();
cJSON_AddItemToObject(root, "hobby", hobbyArray);
cJSON * hobby1 = cJSON_CreateString("Reading");
cJSON * hobby2 = cJSON_CreateString("Travelling");
cJSON_AddItemToArray(hobbyArray, hobby1);
cJSON_AddItemToArray(hobbyArray, hobby2);
int arraySize = cJSON_GetArraySize(hobbyArray);
for (int i = 0; i< arraySize; i++) {
cJSON * hobby = cJSON_GetArrayItem(hobbyArray, i);
char * hobbyStr = cJSON_GetObjectItem(hobby, "hobby")->valuestring;
printf("%s\n", hobbyStr);
}

上述實(shí)例展示了CJSON庫(kù)的一些基本使用方法，包括JSON對(duì)象的創(chuàng)建、JSON字符串的解析和JSON對(duì)象的訪(fǎng)問(wèn)。通過(guò)CJSON庫(kù)的支持，我們可以在C語(yǔ)言中輕松地進(jìn)行JSON數(shù)據(jù)的操作和交換，為各種數(shù)據(jù)應(yīng)用提供更加靈活和高效的數(shù)據(jù)格式支持。