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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     Compiler warning (level 1) C4139
 
     'hexnumber' : hex escape sequence is out of range
 
     A hex escape sequence appearing in a character or string constant
     was too large to be converted to a character.
 
     If in a string constant, the compiler cast 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 compiled with /J, the compiler cast the value to an
     unsigned char.
 
     For example, '\x1ff' is out of range for a character.  Note that
     the following code causes this warning:
 
          printf("\x7Bell\n");
 
     The number 7be is a legal hex number, but is too large for a
     character.  To correct this example, use three hex digits:
 
          printf("\x007Bell\n");
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