Octal to Decimal Conversion Write a program that prompts a user for an octal number, which will be entered as a string of 0s to 7s in a character variable. For example, the user might enter 377 as a character string. The program should then convert the input octal number into a decimal number, and display the corresponding decimal number to the user. Design the program to handle up to five octal digits. (Hint: This might be a great place for a SELECT CASE structure.) Test your program with the following binary numbers. (a) 377 (b) 11111 (c) 70000 (d) 77777