I need help writing these functions in C programming.

Write a C function that checks if an array is sorted or not using an iterative approach. Write a C function that checks if an array is sorted or not using a recursive approach Write a C function to reverse the elements of an array. Note you are not allowed to use an 1. additional array to do that Write a C function to find the sum of the elements of an array. Write a C function to find the maximum and minimum elements in a given array Write a C function to print all the elements in a given array using a recursive approach. Write a C function that takes 2D array and convert the rows to columns and the columns to row. Write a C function to shift the elements of an array to the left or the right n positions Write a C function calculates the number of digits in any given integer number, e.g if the input is 2317 the out put is 4 if the input is 5 the output is 1, and if the input is 73 the output is 2