As Rajesh said, your computer is a binary device and so all data is stored as binary. Here is some code that displays an 8 bit data as binary. You can extend the same for any other data type. for (unsigned i = 0; i < 8; ++i) cout << (datatype & (1 << i)) ? '1' : '0'; «_Superman_»  _I love work. It gives me something to do between weekends. _Microsoft MVP (Visual C++) Polymorphism in C

hmaz4629 wrote: well my constructor just told me... When your constructors start talking to you, it's time for a break! :-D "One man's wage rise is another man's price increase." - Harold Wilson "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons "Some people are making such thorough preparation for rainy days that they aren't enjoying today's sunshine." - William Feather

You need to be a bit clearer on what you want. "32 digits" implies decimal digits but I suspect you may bew talking about 32-bit numbers (ie 32 binary digits) or perhaps 32 hex digits. Also do you just want to calculate using these large numbers or do you want code for a calculator type program with buttons etc. My best guess is that you just want to do calculations on big integers up to 32 hex digits (128-bits). These sorts of numbers are use in things like encryption. I have used the code in this article with success: C++ Integer Class[^]. Andrew Phillips http://www.hexedit.com andrew @ hexedit.com