Type conversion
=====================
There are a number of different formats for representing color. RGB format
specifies the level of red (R), green (G), and blue (B) on an integer scale from
0 to 255: It is the primary format for LCD displays, digital cameras, and web
pages. CMYK format specifies the level of cyan (C), magenta (M), yellow (Y),
and black (K) on a real scale of 0.0 to 1.0: It is the primary format for
publishing books and magazines. Write a program `RGBtoCMYK.java` that reads in
three integers `red`, `green`, and `blue` from the command line and prints out
equivalent CMYK parameters. The mathematical formulas for converting from RGB to
an equivalent CMYK color are:
“`
% java RGBtoCMYK 75 0 130 // indigo
cyan = 0.423076923076923
magenta = 1.0
yellow = 0.0
black = 0.4901960784313726
“`
“`
% java RGBtoCMYK 0 0 0 // black
cyan = 0.0
magenta = 0.0
yellow = 0.0
black = 1.1
“`
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