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How To Use C++ front() And back() Methods Of Vectors

What are the Vectors in C++? How can I use front() iterator method on vectors? How can I use back() iterator method on vectors? Can I get the last member of a vector by using back() method? How can I access to the first element of a vector? Can I print out the first and the last members of vectors by using front() and back() methods? Let’s answer these questions.
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