When a programme interacts with users, it uses I/O operations. The standard C library for input-output tasks is stdlib. Two essential streams play a role in dealing with input-output activities in C. These are the following: Standard input, or stdin, is a data stream that accepts input from devices like as the keyboard.
To conduct I/O operations on a physical file system, C# offers a static File class. The static File class contains a number of utility methods for interacting with actual files of any sort, including binary, text, and so on. To do some simple operations on an actual file, use this static File class.