C programming language

4. (10 points) Consi elaration: double a[10] = { 1.2, 2.1, 3.3, 3.5, 4.5, 7.9, 5.4, 8.7, 9.9, 1.0 Write a function named out_of_ order that will test this array or any array of doubles for the condition The function returns the index of the first element that is out of order, or -1 if the elements are in order. The function should work for an arbitrary array of doubles. Be sure to explain how you avoid illegal array indexes (i.e., out-of-bounds array accesses). For example in the sequence above, 7.9 is not less than or equal to 5.4 and so it appears to be out of order