设计C函数：查看：服务器和客户端连接成功后得到客户端存储在SQlite智能家居状态表中最新的温度和湿度数据。信息处理：根据SQlite智能家居状态表中的温度和湿度数据分析出合理建议。带注释

#include <stdio.h> #include <sqlite3.h>

// 回调函数，用于获取查询结果 int callback(void *data, int argc, char **argv, char **azColName) { // 打印查询结果 for (int i = 0; i < argc; i++) { printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL"); }

return 0;

}

// 连接到SQLite数据库并执行查询 void queryDatabase() { sqlite3 *db; char *zErrMsg = 0; int rc; const char *sql = "SELECT temperature, humidity FROM smart_home_status ORDER BY timestamp DESC LIMIT 1";

// 打开数据库连接
rc = sqlite3_open("smart_home.db", &db);

if (rc) {
    fprintf(stderr, "Can't open database: %s\n", sqlite3_errmsg(db));
    return;
}

// 执行查询语句
rc = sqlite3_exec(db, sql, callback, 0, &zErrMsg);

if (rc != SQLITE_OK) {
    fprintf(stderr, "SQL error: %s\n", zErrMsg);
    sqlite3_free(zErrMsg);
}

// 关闭数据库连接
sqlite3_close(db);

}

// 分析温度和湿度数据并给出合理建议 void analyzeData(int temperature, int humidity) { if (temperature < 20) { printf("It's too cold, consider increasing the temperature.\n"); } else if (temperature > 28) { printf("It's too hot, consider decreasing the temperature.\n"); } else { printf("The temperature is within the optimal range.\n"); }

if (humidity < 40) {
    printf("The air is too dry, consider using a humidifier.\n");
} else if (humidity > 60) {
    printf("The air is too humid, consider using a dehumidifier.\n");
} else {
    printf("The humidity is within the optimal range.\n");
}

}

int main() { // 假设已经建立服务器和客户端连接 // 获取最新的温度和湿度数据 queryDatabase();

// 假设获取到温度和湿度数据分别为20和50
int temperature = 20;
int humidity = 50;

// 分析数据并给出建议
analyzeData(temperature, humidity);

return 0;