Answer Happy

Write a C++ statement to import the library that performs the
following functions
Import the library that;
Makes predefined math functions like pow,
and sqrt available
Makes the standard input from keyboard and output to screen
available
Makes it possible to format what the output of your program
looks like, both to the screen and a file
Makes it possible to use files and all of its associated
operations like open,
and close
Makes the string datatype and its associated operations
available