In the above program, we are printing the message on the output screen. This can be done by using both Stdout and stderr. In an earlier version of v6 both output and error was sent to the file also which required the manual cleanup by the user as there was no stderr in that version.
So stderr is used to do the opposite of the above version where stderr is used to send the message to the file and stdout is used to print the output on the console. The stderr cannot be redirected to any file instead they are used to print on the same console, whereas stdout can be used for the redirection. The printf statements used in the programs are used stdout devices by default.
So if we use fprintf statement then these are used to send the output message to the file stdout. If we use stderr in the fprintf statement then this will not redirect the output message to the file instead it is printed on the same console. The above situation can be explained by the below programs.
This above program uses printf statement where stdout uses these statements to print the output message on the console. Whereas the above program can also be written using frprintf statements to do a similar job as the above program. This can be written as below:. In the above program, we use fprintf statement where it redirects the output message and send it to the file using stdout. Now let us see if we use stderr it will not redirect the output message to the file instead it works the same as the above program it will print the output on the console.
This can be done using the below program. In the above program, the second fprintf statement uses stderr and when we try to redirect the output message only the output message of first and third fprintf statements are redirected or send to the file whereas the second fprintf statement which uses stderr cannot be redirected so it prints the output message on the console.
Show 14 more comments. Active Oldest Votes. Improve this answer. Add a comment. Sign up or log in Sign up using Google. Sign up using Facebook.
Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.
Does ES6 make JavaScript frameworks obsolete? Podcast Do polyglots have an edge when it comes to mastering programming Featured on Meta. Now live: A fully responsive profile. Linked 3. We'll assume you're ok with this, but you can opt-out if you wish. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website.
We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent.
0コメント