Which of the following is not a member of std::weak_ptr?

What will be the output? auto fn = [](unsigned char a){ cout << std::hex << (int)a << endl; }; fn(-1);

What is the purpose of std::set_union?

Suppose that a global variable 'x' of type std::atomic with an initializer parameter of 20 should be added to a header and (if necessary) source file so it is available to all files that include it. How should this be implemented where it will cause neither compile nor linker errors when compiling multiple object files together? Assume that a header guard and #include is already present in the header (though not shown in the answers), and that C++11 is enabled.

What is the value of 'v'? auto &p = 10; double v = p;

Virtual inheritance is needed...

A function prototype is ____.

To correctly swap two values, you create a(n) ____ variable to hold one of the values.

An array name and index are separated using ____.

A(n) ________ search is more efficient than a(n) ________ search

You may use a pointer to a structure as a ________.