How to make the C/C++ source can be built for any architecture,select proper answer?

Which of the following statement is correct?

Which function prototype is VALID? (Choose all that apply)

When arguments are passed to a destructor it is call a '___' error.

How can you declare a template?

How many members does the below Freelancer class have? class Upwork { public: int freelancers; int jobs; int projects; private: double income; double costs; }; struct World { int inhabitants; double gdp; int countries; }; class Project { public: char* client; char* title; double hours; double rate; private: char* dialog; char* ip; }; class Freelancer : Upwork, World, Project { private: char* name; };

What does container adapter provide to interface?

Which is true in relation to destructors for automatic objects if a program terminates with a call to a function exit?

Which is not a type of constructor?

Void pointer can point to which type of objects?

How many default constructors per class are possible?