In C code

rite code for the struct header file named "course.c" that consists of the following: includes for all header files function definitions for the following functions: o fillCourses() o The function will take in two parameters: array by reference and the length of the array. o The function will not return anything. o The function will initialize all the data members for all the struct array objects. o subject values should be initialized to "CS" o courseNo values should be initialized to the index in the array o maxEnrollment values should be initialized to a random value between 50 and 80, inclusive o curEnrollment values should be initialized to O o calculateAverageEnrollment The function will take in two parameters: array by reference and the length of the array, o It will calculate the average enrollment for all courses using the curEnrollment data member. o The function will return this average (double) value