sqlite3怎样将A数据库表复制到另一个数据库

#include "stdio.h"

#include "sqlite3.h"

 

int main()

{

    sqlite3 *db_source = NULL;

    sqlite3 *db_des = NULL;

    sqlite3_backup *bak;

    sqlite3_open("c:\\test.db",&db_source);

    sqlite3_open("c:\\test1.db",&db_des);

        bak=sqlite3_backup_init(db_des,"main",db_source,"main");  

    sqlite3_backup_step(bak,-1);

    sqlite3_backup_finish(bak);

    sqlite3_close(db_source);

    sqlite3_close(db_des);

    return 0;

}