In hex, numbers between zero and nine are represented as they are in decimal, with number ten using the letter A, then 11 as B and so on up to F, which is 15. The 12 is therefore C in hexadecimal.

While the decimal numbering system allows any digit in a number to have any of ten values (0-9), digits in hexadecimal numbers can have 16 (0-F), digits in octal numbers only eight (0-7) and ...

How would i make a program that converts a user entered decimal number into binary and hexadecimal representation of it. I cant use the shift operators or printf format specifiers either.

Working in hex or binary can feel strange and confusing compared with the base 10 number system used in our everyday world. It's not rocket science, but it requires adjusting how one thinks about ...