In C programming language, there are different file descriptors which are also known as standard output. There are 3 standards I/O devices that are stdin for standard input, stdout for standard output, stderr for error message output. In this article, we are discussing stderr which used to map on the terminal output. It generates the error message that displays on the output devices and not anywhere else. These three standards I/O devices are the streams that are declared in the header file stdio.h file. Stderr is directly linked by OS to either window terminal or Unix terminal.
Functions of Stderr in C with Examples
Stderr is the standard error message that is used to print the output on the screen or windows terminal. Stderr is used to print the error on the output screen or window terminal. Stderr is also one of the command output as stdout, which is logged anywhere by default. So the output message goes to the console or terminal and if once the terminal is closed the output message is gone forever, where if we want to store such output messages or error messages then we have to redirect it to the files. Stdout and stderr are standards in which stdout is fully buffered whereas stderr is not fully buffered because stdout will completely remove the messages or flushes whenever the program is asked to do explicitly and stderr writes the output message or error message immediately to the console or the window terminal. Let us see how the stderr is used to print.
Example
Code:
Code:
#include <stdio.h>int main()
{
fprintf(stderr, "Educba Training");
}
Output:
