How many variants of the tie() function are there?

 A number is 0xA4F1 in hex. What number is this in decimal? 

What is the output of the following C++ code?

Where can you define member functions in a C++ class?

What are the parameters used to initialize the content of the buffer?

What does polymorphism in object-oriented programming (OOP) mean?

Which of the following is true about static variables?

 Consider the following two declarations of function foo. 

static void foo(void);
extern void foo(void);

 Which linkage does function foo finally have? 

Which statement about the next higher permutation function is correct?