error 010: invalid function or declaration

[unknownscripts]

Вот такие ошибки в одном месте при компиляции:

C:\Users\ав\Desktop\modv0.2\gamemodes\modv01.pwn(51) : error 010: invalid function or declaration
C:\Users\ав\Desktop\modv0.2\gamemodes\modv01.pwn(51) : error 001: expected token: ";", but found ")"
C:\Users\ав\Desktop\modv0.2\gamemodes\modv01.pwn(55) : error 017: undefined symbol "SQL_HOST"
C:\Users\ав\Desktop\modv0.2\gamemodes\modv01.pwn(56) : error 017: undefined symbol "mysql_ping"
C:\Users\ав\Desktop\modv0.2\gamemodes\modv01.pwn(64) : error 029: invalid expression, assumed zero
Сам код:

#endif

public OnGameModeInit(stock ConnectMySQL())
{

    stock ConnectMySQL() {
    mysql_connect(SQL_HOST, SQL_USER, SQL_DB, SQL_PASS);
    switch(mysql_ping()) {
                case 1: print("MySQL connection: alive.");
                case -1: print("MySQL connection: dead.");
}
    return 1;
}

public OnGameModeExit()
stock DisconnectMySQL() {
        mysql_close();
        print("MySQL connection closed.");
}

stock CheckMySQLConnection() { 
        if(mysql_ping() == -1) mysql_reconnect();
        return 1;
}