C查詢樹形結(jié)構(gòu)JSON通常用于從一個(gè)大型JSON文件中查找特定數(shù)據(jù)。以樹形結(jié)構(gòu)方式表示JSON文件可以令數(shù)據(jù)的讀取和處理更加高效。

{
"name": "John Doe",
"age": 30,
"address": {
"street": "123 Main St",
"city": "Anytown",
"state": "CA",
"zip": "12345"
},
"phoneNumbers": [
{
"type": "home",
"number": "555-555-5555"
},
{
"type": "work",
"number": "555-555-1234"
}
]
}

以上示例為一個(gè)簡(jiǎn)單的JSON文件，如果需要從中查找特定數(shù)據(jù)，則可以使用C語言的JSON庫。下面是一個(gè)使用Jansson庫讀取以上文件，并輸出其中特定數(shù)據(jù)的C程序：

#include#includeint main () {
json_t *root;
json_error_t error;
root = json_load_file("file.json", JSON_DECODE_ANY, &error);
if (root) {
json_t *name, *city, *number;
name = json_object_get(root, "name");
city = json_object_get(root, "address");
city = json_object_get(city, "city");
number = json_array_get(json_object_get(root, "phoneNumbers"), 0);
number = json_object_get(number, "number");
printf("Name: %s\n", json_string_value(name));
printf("City: %s\n", json_string_value(city));
printf("Phone: %s\n", json_string_value(number));
} else {
printf("Error: %s\n", error.text);
}
return 0;
}

以上程序?qū)⑤敵鲆韵陆Y(jié)果：

Name: John Doe
City: Anytown
Phone: 555-555-5555

以上示例僅為簡(jiǎn)單說明，實(shí)際應(yīng)用中需要根據(jù)JSON文件的結(jié)構(gòu)設(shè)計(jì)對(duì)應(yīng)的查詢方式。