: : hi
: : How we can make a calculator which is capable to add and subtract numbers in decimal,binary,hexadecimal,and octal.But decimal into decimal, binary into binary ,hexadecimal into hexadecimal and octal into octal.We need just addition and subtraction.
: You can make it by writing a lot of code. Good luck with your homework.
or, a better idea is that if you have the money many people here have time to spare...