My brain's getting rusty - binary conversion

[Lionel Pinkhard <lionelpi@mweb.co.za>]

Hi,

I'm sorry, my brain seems to be getting a bit rusty. I've been working all day trying to write a simple program to convert a binary number into decimal. I tried inputting the number with 'cin', multiplying each digit by 128, 64, 32, 16, 8, 4, 2, 1, respectively, and then outputting it with 'cout', but every time I get another number than if I convert it by hand. Now I know my conversion (by hand) may be incorrect, but I don't think that 00000001 should be equal to 0. Another problem is that my code is pretty long. Can somebody please give me a short formula for doing this translation, in either C, C++, Fortran 77 or Linux Assembler? Another language would also do fine if you tell me where to get a compiler and some tutorials on how to use it. :-) I also have Chipmunk Basic, but I know how limited Basic is.

Also, if somebody could give me a formula for translating from decimal to binary, I would be grateful. I know this is much more trickier, and I have no idea how to use either powers or square roots in C++. If somebody would tell me this, it would also help.

Kind regards,

Lionel Pinkhard
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