A string is a series of characters treated as a single unit. A string may include letters, digits and various special characters such as +, -, *, / and $. String literals, or string constants, in C++ are written in double quotation marks as follows:

"John Q. Doe"             (a name)"9999 Main Street"        (a street address)"Maynard, Massachusetts"  (a city and state)"(201) 555-1212"          (a telephone number)

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