computer theory-automata

(See attached file for full problem description) --- Is the language L = { anb3nan n>0 } context free? If so, find a CFG grammar for it. If not, prove it. --- (See attached file for full problem description)

Menu based Currency Conversion Program in C

Expand the "Currency Conversion" program to include a menu that allows the user to choose which currency he/she wishes to display in its equivalency to the US dollar. - Correctly use at least 1 function or subroutine Permit the user to input an amount to be converted into US Dollars. You may assume that a number is input. You may not assume the value is > zero. Only values > zero are valid. Permit the user to repeatedly perform different conversions to US Dollars. The user will be provided a way to indicate when they are done & the program will exit * In Program I am interested in the use of the Do..While an If..Else for the new part. I also realize that the second attached file h... click for more

Finite-state automata

Hi, I'm looking for a FSA (Finite State Acceptor) for all binary strings containing an odd number of 0's. A state diagram is the easiest for me to understand. A valid regular expression to describe the language (I've verified this) is 1*0(1+01*0)* Thanks!

Windows XP Questions on Copying files and Miscellaneous

I have a couple questions: 1.Which of the following is a method for copying a file or folder? -Press[Ctrl], then drag the folder or file -Drag the folder or file on the same disk drive -Double click the folder or file -Left click the folder or file, then Copy 2.Which of the following locations is not a valid place from which to delete a file and send it to the Recycle Bin? -Floppy disk -My Documents -Hard drive -My Computer 3. What graphical element appears on a shortcut icon?

Currency Conversion

I have problems with my switch menu performing the desired calculations. Also, the while statement is off. The product converts amounts of money from one currency to another currency. Five currencies are to be used. The currencies are: U.S. Dollars Canadian Dollars Japanese Yen Indian Rupees British Pounds A user enters an amount of money in one of the five currencies and requests to convert that money into another currency. The equivalent amount of money in the requested currency is displayed to the user.