What is istream Class in C++

istream Class Functions   The istream class is derived from ios class. The istream class contains the following functions:   Formatted Console I/O   C++ provides various console I/O functions for formatted input and output. The three ways to display formatted input and output are:   ios class functions and flags Standard manipulators User-defined manipulators   ios Class   The ios class is the base class for all input and output classes in C++. Following are some of the functions available in ios class: The width() function can be used in two ways as shown below:   int width() : Returns the current width setting.   int width(int) : Sets the specified width

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What is istream Class in C++
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