C++

1. Create an array of 100 integers. 2. Create a function fill_random () that will take the array and its size as parameters and assign a random number between 1 and 1000 to each element using the following expression: - rand() \& 1000+1 3. Create a function average () to calculate and return the average (as a floating-point value) of the array. Add code to your main program to call the function with the array you created in step 1 , and print the result to the screen. 4. Create a 2-dimensional array with 15 rows and 15 columns, capable of storing characters. 5. Write a function make puzzle () that will take the 2-D array and the number of rows it contains as parameters. The function should fill the array with random characters by assigning values between ' a ' and ' z ' using the following expression: - static_cast( rand () \& 26+ s a' ) 6. Write a function print puzzle () that will take the 2 D array and the number of rows it contains as parameters. The function should print the array to the screen, separating the characters with one space and placing a newline after each row. (The output should appear square.) 7. Move the function prototypes and definition 5 you created into a new header file named array_functions.h. Be sure to protect the contents of the header file with include guards, and include it in your main program. Test that vour rode still works