Assume we have the following numbers 18, 3, 2, 15, 7, 10, 11, 6,7, 6, 9, 12, 6, 13, 14, 3 Write a C++ program with the following functions: 2.1 A function, using a loop, that reads as input by the user the above numbers and populate 4x4 two-dimensional array. Print the array. 2.2 A function that prints the sum of all the elements in the array