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American University of Beirut Faculty of Arts and Science, Department of Mathematics and Computer Science CMPS258 final exam Programming Languages Exam duration: 2 hours Name: . Exam guidelines: «students must submit this booklet as their answer sheet. 6. students must use ink ¢. exam total marks ts 51/56 Part 1; (12 marks) Tick True (T) er False (F) cach question is worth 0.5 mark. . Any object file contains a symbol table . Lazy evaluation is essential to implement functions The linking process gencrates an executable file . C++ references are easier to use than C pointers . A symbol table in code.o has a list of the names of all variables declared in code.c . Not all object files become input to the linking process. . The linking process builds a combined symbol table . All pointers to void need to be cast before they can be used to reference an object . The linking process searches library files for undefined symbols 10. The default access modes for C'+~ structures and C++ classes are different 11. Currying is using partially implemented functions 12.C++ references arc used to pass parameters to functions 13. The linking process checks for storage space 14. ‘Cipcasting’ is a mechanism underlying inheritance in any OO language 18.C ++ structures cannot be used to implement inheritance 16.C++ references are a useful alisasing mechanism 17. Pointers to void are the same size as any other pointer 18. Under some conditions an object file can be executed 19.C—+ references are generally easier lo use than C pointers 20.Pointers to void can be used as an information hiding mechanism 21.C- + structures are used less offen than Cl | classes 22. Type variables in Haskell implement polymorphism jowncasting’ allows access of a base class through a pointer to a derived class Any C++ reference requires four bytes of memory TT oi ey li || t | PELLET EEEE ELT ol Mid I i Sod 4S4e Se SHS ase aaa Part 2: Short questions on C++ (7 marks) only one answer for a multiple choice question must be chosen. Each question is | mark 1, C++ uses static binding for a function fot a derived class 2 it * fis dectared virtual =f inthe base class is virtual © fis virtual in both, D and the base class of D « fis not virtual anywhere 
