Consider a pointer to void, named ptr, which has been set to point to a floating point variable g. Which choice is a valid way to dereference ptr to assign its pointed value to a float variable f later in the program? float g; void *ptr=&g;

What is the .* operator and what does it do?

How can C++ code call a C function?

What does this part of a main.cpp file do? #include "library.h"

What's wrong with this definition when using a pre-C++11 compiler?

What is the statement below equivalent to? sprite->x

What is the value of 2--2?

Where does the compiler first look for file.h in the following directive: #include 'file.h' ?

std::vector<int> foo(5);

Within a class declaration, the statement 'virtual int foo() = 0;' does what?

Output of the given code? #include struct shape { virtual void move() { std::cout << 'shape::move\n'; } }; struct circle : public shape { void move() { std::cout << 'circle::move\n'; } }; struct rectangle : public shape { void move() { std::cout << 'rectangle::move\n'; } }; int main() { shape *s; s = new shape(); s->move(); s = new circle(); s->move(); s = new rectangle(); s->move(); return 0; }