Write a code in the main function that would call Function 1 and Function 3 of the Lab class. You can use values of your choice for function arguments (if required). Please write the output of these function calls. class Lab {    int time; public:    Lab(){                                                //Function 1        time = 120;        cout << "Duration of lab is " << time << “minutes” << endl;    }    void Demonstration(){                                 //Function 2        cout << "Lab Demonstration started." << endl;    }    Lab(int duration){                                    //Function 3        time = duration;        cout << "Duration of lab is " << time << “minutes” << endl;    }    ~Lab(){                                               //Function 4        cout << "Thanks. Lab has ended." << endl;    }

Write a function prototype and a function definition called average that receives an array of type integer, and the number of elements in the array.  It returns the average of the numbers in the array.

C++ Code Step 1: Preparation For the moment, "comment out" the following under-construction code: In dynamicarray.h: All function prototypes except the constructors and destructor. Keep the member variables (but we will be replacing them shortly). In dynamicarray.cpp: All function implementations except the constructors and destructor. You should also remove (not just comment out) INITIAL_CAP, and replace it with a hard-coded 10 inside the default constructor. This will also eventually go away. In main: Comment out all the code inside the RunPart1Tests function between the linesbool pass = true; and return pass; • Also in main: Comment out all the code in the main function starting with the "Equality comparison" comment and just before the "return 0;" line. Step 2: Replacing member data and the two constructors You're going to replace the current member data (arr, len, and capacity) with a single vector of integers. Remember that vectors keep track of their own size and capacity, so…

Write the function prototype of the void function named G() that takes an int reference parameter and two char parameters respectively Your answer

Given the code: class Book { public: string title; string author; }; Write an internal function definition for a mutator function for this class.

C++ Write the defnition of the function int computeProd() with parameters that receives as arguments two integer values computes their produc and returns it to the celing function.

9. Complete the function prototype so that the callback parameter accepts a closure. The closure accepts a String and an Int parameter but does not return anything. func send(to: String, data: String, callback: _____ ) { // function body }