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A character string is an array of characters terminated by the ASCII
0 or NULL character
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You create a character string within your programs by declaring an
array
of type char
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Your program is responsible for appending a NULL character after the
string's last character
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When your program use string constants contained within double quotes,
the C++ compiler automatically appends the NULL character
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C++ lets you initialize strings at declaration by specifying the
desired
characters within double quotes
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Most C++ compilers provide an extensive set of string
manipulation functions in their run-time library
