In C language

The purpose of this program is to read in a series of integers via command line arguments and then determine if this set of integers is sorted in ascending order. You will output the first number's index in argv that causes the set to not be sorted. For example:

Input: ./a.out 1 2 3 4 5 10 15 20 21 23 500 -2 501 505 Output: Unsorted at 12 index. 

Input: ./a.out 26 27 29 30 31 32 45 46 47 101 134 138 Output: Sorted.