In C++ Write the definition of a void function that has two parameters: an array, and an integer parameter that specifies the number of elements in the array.  The functions swaps the first and last elements of the array.

In C++ Write a function header ( and only function header ) for the following: Function named printArray() that returns nothing, and that takes two parameters: an array of integers named testScores [ ] an integer named SIZE .

In C Programming: You will need all the functions from the previous assignment, as well as the structure course:• Department (string, 15 characters)• Course number (integer, 4 digits, leading 0 if necessary)• Course title (string, 30 characters)• Credits (short, 1 digit) Write a function saveAllCoursesText() which receives an array of course pointers and the array’s size, then outputs the content of the array in text format to a file named “courses.txt”.• Save the entire structure on 1 line (all the members of the structure should be saved in 1 fprintf() command)

Exercise 2  This exercise is designed to assess student’s skills of writing programs using arrays and loops. Write a C++ program using array and loop that prompts a user to enter 15 Students’ marks in ProgramDesign and Implementation (PDI) Module in an array. The program sorts the students’ marks in descending order using a loop and displays the marks of all students as well as lowest, highest, average marks, and the class result based on the average module marks. The result criteria is given below:Average is less than 40 = Poor ResultAverage is between 40 to 49 = Fair ResultAverage is less than 50 to 59= Good ResultAverage is less than 60 to 69 = Very Good ResultAverage is between 70 to 79 = Excellent ResultAverage is 80 or greater = Outstanding ResultNote: You must demonstrate the use of arrays and loops. Your code must be properly commented Sample Output:Welcome to Result Management SystemEnter PDI Marks of Student 1: 50Enter PDI Marks of Student 2: 35Enter PDI Marks of Student 3:…