1 If the XML parser sees a null character in its input, it throws an exception and stops processing.

2 Many SSL certificate companies will allow people to attach a programming symbol called a "null character" into the Web address onto the certificates they receive.

3 A null character is appended after the last character written.

4 It appends a NULL character so that line contains a properly null-terminated C string.

5 Then, we would have to add a NULL character after the last char copied into s1.

6 The NULL character when the flag is passed to the matching algorithms.

7 Remember, in C, a string is nothing but an array of characters with a terminating NULL character (ASCII 0).

8 The dot character ". " matches any single character except null character and newline character.

9 The buffer size argument includes the space for the terminating null character.

10 Each message, or frame, starts with a command and ends with the ASCII sign for a null character.