Review Questions for Advanced OOP

Class 1

• Whats wrong with: char Str[128]; Str="Bob"; ?
• How do you declare a struct called Date that has integer members M, D, and Y?
• Whats the difference between malloc and calloc?
• Whats does realloc do?
• How can a function have several return values?
• Given: void Foo( int i ) { i =i*10; } and int x=10; Foo(x);, What is the value of x?
• What does Polymorphism mean?
• What is a class, and what is an object (or instance)?

Class 2

• How would you use cout to output a string called Name and an integer named Age?
• What does function overloading mean?
• What is name mangeling?
• For two overloaded functions (same name), how does the compiler determine which one to call?
• What is a default argument for a function?
• Default parameters must be supplied right to left, or left to right?
• What syntax rules are there for creating a constructor and destrucor?
• What is the job of a constructor?
• What is the job of a copy constructor?
• When is a copy constructor invoked?
• What are the 'big 3' member functions for a class?
• What happens if you do not have a copy constructor, and your object is passed by value to a function?

Class 3

• What operator can not be written for your class?
• Can you create your own operators, like a '$' operator?
• You should be able to write a prototype for all the operators for a class.
• Given MGString S, S2; MGDate D; and S2 = S + D; Which operator+ function would be called: MGDate::operator+ or MGString::operator+
• Can operator functions be overloaded?
• Can operator functions be written outside the class, as non-member functions?
• The Standard C++ new operator throws an exception when out of memory: true or false?
• Many older compilers still permit new to return NULL or 0 when out of memory: true or false?
• You can provide your own new and delete operators for allocations of your class: True or false?
• What is a static member variable?
• Describe the steps needed to implement a static data member

Sorry, just a mish-mash of topics:

• What does const mean at the end of a function?
• What is a virtual function?
• What is a pure virtual function?
• What is special about a class with a pure virtual function?
• What does static mean for a member variable? For a member function?
• What is the difference between has a and is a?
• In a base and derived class, whose constructor is called first?
• Whose destructor is called first?
• What is the difference between passing pointers and references?
• What is typeid?
• What is type_info?
• What is RTTI?
• What are the three keywords for exception handling?
• Why would you create an exception class?
• Can exceptions be bested?
• Why might a function have a try/catch block?
• You should be familiar with fstream, istream, ostream, and strstream
• What is a template class?
• Why would you write a template class?
• Can template classes be derived from normal classes, and visa-versa?
• Can you name atleast 4 collection classes in the STL?
• Can you name atleast 2 member functions in each?
• What is an iterator, and where are they defined?
• Name atleast 3 algorithm templated functions.