Decode_char function

/* This function expects a character (color code) and returns a double precision floating-point number as its value. If the code is not legal, it returns a value that signals that fact. */

double decode_char(char code)

{

switch (code) {

case 'B':

return 0.0;

case 'N':

return 1.0;

case 'R':

return 2.0;

case 'O':

return 3.0;

case 'Y':

return 4.0;

case 'G':

return 5.0;

case 'E':

return 6.0;

case 'V':

return 7.0;

case 'A':

return 8.0;

case 'W':

return 9.0;

default:

return -999.0;

}

}

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