1, An include file should not contain more than one class definition.
2, Divide up the definitions of member functions or functions into as many files as possible.
3, Place machine-dependent code in a special file so that it may be easily located when porting code from one machine to another.
2, Divide up the definitions of member functions or functions into as many files as possible.
3, Place machine-dependent code in a special file so that it may be easily located when porting code from one machine to another.
