Write an Octave function called calc_num_vowels.m that takes as input a string of any length. The string can contain spaces. The function must determine the number of vowels in the string and the location of the vowel in the string. The function must return two output parameters, namely the number of vowels and an array with the location of the vowel in the string. The program should perform the following functionality:

(i) Read a string from the command window as shown in example below.

(ii) Get the string length.

(iii) Check each character in the string if the character is a space then continue. If the character is a vowel, then store the location and increment the number of vowels.

(iv) Return the number of vowels and the vowel location array.

(v) The function must test that there is an input argument.

(vi) The function must print an error message if there are less than two input arguments.

(vii) Hint: Use a vector array to store the element number in the string where the vowel occurs see example below where the vowel i is element 3.

Example: You can test your function with the following test string: [num, arr] = calc_num_vowels('This Is A TesT') num = 4 arr = 3 6 9 12