The string class's front and back member functions were introduced in C++11.

Name: The string class's front and back member functions were introduced in C++11.
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The front and back member functions were introduced in C++11 as part of the standard library for the string class. The front function returns a reference to the first character in the string, while the back function returns a reference to the last character in the string.

The String Class's Front and Back Member Functions Were Introduced