Program 14: Hex and Love

Program 14: Hex and Love

Converting decimal to hexadecimal #

You know that you can enter numbers as decimal, octal, binary, or hexadecimal. The question is, however, how do you actually change base? Going from binary (base 2) to hexadecimal (base 16) is fairly easy because 2 fits inside of 16. When you go from decimal (base 10) to hexadecimal, you need to get to that intermediate step.

Take the number 200. To visualize the base change better, write 200 in binary. From there you can see that 200 fits inside 1 byte. Within that byte, you can break it into two 4-bit slices. These two 4-bit slices are then converted to 0-F to get the hexadecimal representation.

    Decimal: 200 
    Binary: 11001000 
        Group1: 1100 = 12 => c 
        Group2: 1000 = 8 => 8
    Hexadecimal: c8 

Program 14: Hex and Love Video

Description of Program

I have a bunch of colors saved from my web programing and I would like to take those rgb values and convert them to #rrggbb values. Write a program that takes sets of three rgb values and converts them into the #rrggbb hex representation.

A test set of values in included in the template.

  • Note: The red color will never be 0.
Completed Code
Expected Output