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This article mainly introduces an example of using C language to simulate the standard input standard input file stream, which has a certain reference value and can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

Stdin is a file descriptor that stands for standard input (keyboard, etc.), that is, in linux, stdin is called standard input (standard input) of terminal (Terminal).

Stdin,stdout and stderr are often seen in linux, which can be called terminal (Terminal) standard input (standard input), standard output (standard out) and standard error output (standard error).

Looking at the manual through man stdin, you can see that they are all defined in stdio.h. When linux starts to execute the program, the program opens these three file streams by default, so that it can input and output to the terminal.

Let's simulate the standard input (standard input) file stream in C language.

Standard input (standard input)

In C language, it is shown as calling scanf function to accept user input, that is, input content from terminal device. You can also use fscanf to indicate what stdin receives. The file identifier for standard input is 0.

# include intmain (void) {charstr [10]; scanf ("% s", str); fscanf (stdin, "% s", str); return0 } Thank you for reading this article carefully. I hope it will be helpful for everyone to share the sample content of simulating the standard input standard input file stream in C language. At the same time, I also hope that you will support it, pay attention to the industry information channel, and find out if you encounter problems. Detailed solutions are waiting for you to learn!

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