Chapter 15 – Working with Strings

1. Whitespace is a non-printable character that creates white space in the output. Space, tab, and vertical tab are examples of whitespace characters.
2. A C string is (1) an array of characters (2) that's terminated by the NULL character.
3. A C string array can be larger than the characters in the string; the end of the string is determined by the NULL character and any array elements after that can be ignored. A string array can never hold more characters (including the NUL character) than the size of the array.
4. 'x' is a single character. "x" is a C string of one character with the NULL character.
5. An empty string is a string with no characters in the array except for the NULL character. A NULL string is a declaration of a string array or a pointer to a string array that has never been allocated.
6. The "Hello" literal string is only modifiable when it is used as an initializer to a constant...