What does standard input output mean?

What is meant by standard output?

Stdout, also known as standard output, is the default file descriptor where a process can write output. In Unix-like operating systems, such as Linux, macOS X, and BSD, stdout is defined by the POSIX standard. Its default file descriptor number is 1. In the terminal, standard output defaults to the user's screen.

What is standard input output and error?

Your screen is the standard output, sometimes denoted as stdout. By default, commands take input from the standard input and send the results to standard output. Error messages are directed to standard error, sometimes denoted as stderr. By default, this is your screen.

What do input standards do?

Standard input, often abbreviated stdin, is the source of input data for command line programs (i.e., all-text mode programs) on Linux and other Unix-like operating systems. Such operating systems feature the concept of standard streams of data.

What are some of the standard input and output devices?

Most computer operating systems and by extension programming languages have identified the keyboard as the standard input device and the monitor as the standard output device. Often the keyboard and monitor are treated as the default device when no other specific device is indicated.