In C++ language:

5. What are the two options for passing parameters to a function in C++?

6. In C++ functions are restricted to returning at most one datatype. What mechanism allows programmers to work around this limitation so that multiple values can be returned?

7. Based on the above the answer, which of the following two function prototypes makes sense to use for a function that will swap two values, the first or second?

void swap(int val1, int val2); //first

void swap(int& val1, int& val2); //second

8. Write a function definition as follows: it returns the C++ form of a Boolean value, its function identifier is anyTwoTheSame, it has three formal parameters which all are floating-point values, and the body of the function returns true if any two of the parameters are equal, otherwise it returns false. I recommend using short, simple identifiers for the three formal parameters.