What is the output of the following program? template void foo(U&, T&) { std::cout << "first"; } template void foo(int&, const T&) { std::cout << "second"; } int main() { int a; double g = 2.; foo(a, g); return 0; }

Output of the following C++ code ? #include class A { int a; public: void foo() {std::cout<<'foo';} }; int main() { A* trial=nullptr; trial->foo(); }

Which of the following operators can you not overload?

const std::string * s; std::string const * g; What can be said about s and g?

Given this code, what is the output? #include struct shape { 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; }

std::function<int()> f; f(); f is not initialized. What exception is thrown, when you try to call it?

The function eof is a member of the data type ____________________.

The standard header file for the abs(x)function is ____.

Before using the data type string, the program must include the header file ____.

C++ provides a header file called ____________________, which is used for file i/o.

The header file is also known as the ____________________.