Endl vs \n in C++
Forum rules
Topics in this forum are automatically closed 6 months after creation.
Topics in this forum are automatically closed 6 months after creation.
-
- Level 1
- Posts: 1
- Joined: Thu Oct 21, 2021 11:13 am
Endl vs \n in C++
Does my programme size decides whether I should use endl or \n?
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
Re: Endl vs \n in C++
Whatever that question in fact means, the answer's still "no" it seems. In C++ (and in other contexts than e.g. C-compatible printf() where \n is also specified to) endl is specified as inserting \n and flushing the stream.
-
- Level 1
- Posts: 1
- Joined: Mon Oct 25, 2021 12:10 pm
- Location: India
Re: Endl vs \n in C++
In a small program there is not much of a difference between endl and \n in C++.
But, for large programs including multiple IO Operations, endl introduces extra overhead of flushing the buffer.
This leads to more CPU cycles being consumed and hence lower throughput. To understand more about the concept behind "the flushing the buffer" and "the how endl and \n works differently" I would suggest you to go through this article.
But, for large programs including multiple IO Operations, endl introduces extra overhead of flushing the buffer.
This leads to more CPU cycles being consumed and hence lower throughput. To understand more about the concept behind "the flushing the buffer" and "the how endl and \n works differently" I would suggest you to go through this article.
Re: Endl vs \n in C++
Just use "<< endl" with your stream outputs. It confirms to the standards.
Bring me a shrubbery, Shrubbery of Mint. Ni!
From Finland with love and liquor since 1972.
From Finland with love and liquor since 1972.
-
- Level 5
- Posts: 582
- Joined: Tue Jul 13, 2021 5:13 am
Re: Endl vs \n in C++
std::endl prints out a newline AND flushes the stream (ensures that everything in the buffer is written right now).
"\n" just prints a newline.
std::endl is slower than "\n" , but it ensures that the output appears instantly -- good for printing out debug info that should be printed within certain periods of time.
"\n" is faster , but the output may appear at a later time -- good for eg. printing out the output in competitive programming / programs that print a lot.
"\n" just prints a newline.
std::endl is slower than "\n" , but it ensures that the output appears instantly -- good for printing out debug info that should be printed within certain periods of time.
"\n" is faster , but the output may appear at a later time -- good for eg. printing out the output in competitive programming / programs that print a lot.