f:\c++项目\prog\main.cpp(325) : error C2228: left of '.fullSeat' must have class/struct/union type

switch(num1)
{
case '101':room101.fullSeat();break;
case '102':room102.fullSeat();break;
case '103':room103.fullSeat();break;
case '104':room104.fullSeat();break;