Write a C$++$ function, using namespace std$,$ smallestIndex, that takes as parameters an int array and its size and returns the index of the first occurrence of the smallest element in the array. To test your function, write a main that prompts a user for a list of $15$ integers and outputs the index and value of the first occurrence of the smallest value.

An example of the program is shown below:

Enter $15$ integers: $1234567890101112131412345678901011121314$ The position of the first occurrence of the smallest element in list is: $9$ The smallest element in list is: $0$

You can use the following integer lists to test your code:

$56,34,67,54,56,87,66,92,15,32,55,54,88,92,30$

$79,26,97,87,73,44,67,46,55,13,20,20,33,42,60$

$63,1,40,81,30,11,26,44,98,1,80,98,15,3,42$