Input stream意思

"Input stream" is a term commonly used in computer science and programming, particularly in the context of input/output (I/O) operations. It refers to a sequence of data that is input into a computer program or a system. The input stream can be a continuous flow of data or a series of discrete values that are read by the program or system.

In the context of programming languages, an input stream is often associated with input operations from various sources such as keyboard input, file input, network input, or any other input device or data source. The data in the input stream is typically processed by the program line by line or character by character, depending on the programming language and the nature of the input.

For example, when a user types on the keyboard, the characters entered form an input stream that is sent to the operating system and then to the program that is waiting to receive input. Similarly, when a program reads data from a file, the file contents are presented to the program as an input stream.

Input streams are often manipulated using input stream objects or functions provided by programming languages or libraries. These objects or functions allow programmers to read from the input stream, parse the data, and perform other operations as needed by the program.