Web Reference: File pointers stdin, stdout, and stderr are also provided. Ken Thompson (designer and implementer of the original Unix operating system) modified sort in Version 5 Unix to accept "-" as representing standard input, which spread to other utilities and became a part of the operating system as a special file in Version 8. Jun 8, 2017 · I am a bit confused regarding the implementation of stdin. What exactly is it? Is it a pointer? I tried to print the size of stdin using sizeof on a 64 bit machine and got 8. I even de-referenced it Jul 25, 2023 · Some functions, such as getchar and putchar, use stdin and stdout automatically. These pointers are constants, and can't be assigned new values. The freopen function can be used to redirect the streams to disk files or to other devices. The operating system allows you to redirect a program's standard input and output at the command level.
YouTube Excerpt: Today we learn about the standard streams
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