You reached us perhaps looking for answers to questions like: What is the ASCII value of question mark or maybe, how to encode question mark in ASCII? The decimal code for question mark is 63. This is equivalent to the hexa-decimal number 3F and the Octal 77. Here is the information about the ASCII code for question mark (?):
Description: question mark
The ASCII character set consists of 128 characters (0 to 127 decimal, 0 to 7F hexadecimal, and 0 to 177 octal). In the 1st column are the characters as they are show in a HTML page. In the second column the decimal code. The 3rd and 4th columns shows the decimal to hex and octal conversion. Note that 32 characters (from 0 to 31) are control characthers (originally non printable chars). They are used, mainly, in data communications to control the information flow in a data line. Actualy, you can type for exmple 'alt + 14' (numeric keyboard) in a windows application and get this symbol ♫ on your screen, but this does not mean that it is a printable ASCII character (Some people call them 'ALT Codes' and the resulting character dependes on your opersting system (windows, linux etc.).