定义一个简单的Computer类，有数据成员芯片（cpu），内存（ram）,光驱（cdrom）等等，有两个公有成员函数run,srop,cpu为CPU类的一个对象，ram为RAM类的一个对象，cdrom为CDROM类的一个对象，定义并实现这个类。-Computer defined a simple class with data members of the chips (cpu), memory (ram), optical drive (cdrom), etc., there are two public member function run, srop, cpu is an object of class CPU, ram for the RAM category an object, cdrom CDROM class as an object, define and implement this class.