(cppreferencegt;ASCIIchartASCIIChartThefollowingchartcontainsASCIIdecimal,octal,hexadecimalandcharactercodesforvaluesfrom0to127.DecimalOctalHexCharacterDescription0000NUL1101SOHstartofheader2202STXstartoftext3303ETXendoftextBS4404EOTendoftransmission5505ENQenquiry6606ACKacknowledge7707BELback81
C Function Library Electronic Manual.chm)