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     Compiler warning (level 1) C4139
 
     'hexnumber' : hex escape sequence is out of range
 
     A hexadecimal escape sequence appearing in a character or string
     constant was too large to be converted to a character.
 
     If the hexadecimal escape sequence is in a string constant, the
     compiler casts the low byte of the hexadecimal number to a char.
     If in a char constant, the compiler made the cast and then sign
     extended the result. If in a char constant and the program was
     compiled with the /J command-line option, the compiler cast the
     value to an unsigned
     char.
 
     Note that the following code generates this warning:
 
          printf("\x7Bell\n");
 
     The compiler reads the characters "7Be" as a legal hexadecimal
     number, but it is too large to fit in a character.  To correct
     this example, use three hexadecimal digits:
 
          printf("\007Bell\n");
                                    -♦-