please answer the question is C

One not-very-efficient way to sort the elements of an array is to find the largest element and swap it with the first element, then find the second-largest element and swap it with the second, and so on.

a. Write a function called IndexOfMaxInRange() that takes an array of integers, finds the largest element in the given range, and returns its index.

b. Write a function called SwapElement() that takes an array of integers and two indices, and that swaps the elements at the given indices.

c. Write a function called SortArray() that takes an array of integers and that uses IndexOfMaxInRange() and SwapElement() to sort the array from largest to smallest.