The standard class(17) in C + + language contain many useful classes for input and output, string handling, mathematical computations, and system programming tasks.A．databaseB．filesC．librariesD．subroutine
The standard class(17) in C + + language contain many useful classes for input and output, string handling, mathematical computations, and system programming tasks.
A．database
B．files
C．libraries
D．subroutine
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