It provides all the necessary and important functions with the number of functions for handling all the strings, chars, and objects within the istream class which comprises all these functions such as get, read, put, etc. Istream being a part of the ios class which is responsible for tackling all the input stream present within the stream. Various stream classes in C++ are as follows:
DIFFERENCE BETWEEN ISTREAM AND IFSTREAM SOFTWARE
Web development, programming languages, Software testing & others Start Your Free Software Development Course The other classes which include functions for the operations include assignment operation like _withassign classes. Both the istream class and ostream class constitute the ios class which is the highest level of the entire hierarchy of C++ stream classes. The iosclass in the hierarchy is the parent class which is considered as a class from where both the istream and ostream class gets inherited. The hierarchy is maintained in a way where it gets started from the top class which is the ios class followed by all the other classes involving istream class, ostream class, iostream class, istream_withassign class, and ostream_withassign class. There is a number of stream classes in the hierarchy which is defining and giving different flows for the varied objects in the class. Class ios is indirectly inherited from the base class involving iostream class using istream class and ostream class which is declared virtually.
Classes associated with the C++ stream include ios class, istream class, and ostream class. All the classes and structures maintaining the file and folders with hierarchies are defined within the file with iostream.h standard library. There are a number of C++ stream classes eligible and defined which is related to the files and streams for providing input-output operations. Stream in C++ means a stream of characters that gets transferred between the program thread and input or output.
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