What exactly is a runtime library?

Question

What is a runtime library? I read this and so I have a decent understanding of its purpose, but is it a file? Is this something you can explicitly include as a standard library?

Answer 1

First of all, this is the concept : the code necessary to provide language functions on the target platform.

i.e. This realization strlenand feclearexceptand ofstream::operator<<all other standard library functions offered language.

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Answer 2

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