Write a program that reads in two hexadecimal numbers from a file, hex.txt, and prints out the sum of the two numbers in DECIMAL. (As noted in class, first do this without using a file and by reading using the cin>> command) From Wikipedia: "In mathematics and computer science, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a-f) to represent values ten to fifteen. For example, the hexadecimal number 2AF3 is equal, in decimal, to: (2 * 16') + (10 * 16)+ (15 * 16') + (3 * 16), or 10,995." For example, if the file contains: 45AF 12B3 ...your program will the result in decimal: The decimal sum of 45AF and 12B3 is 22626. (To check your results, you can go to a hexadecimal calculator on the web. For example, http://www.csgnetwork.com/hexaddsubcalc.html ) To solve this problem: a) Read the hexadecimal numbers as character arrays b) Convert the character arrays to numbers (by calling a function that takes the character array as a parameter, and returns an integer) c) Add the numbers to get a decimal sum