basic functionality of \r in any programming

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what is the basic functionality of \r? it will produce different results with executing in diff compilers like MinGW and linux?

Posted 23-Mar-13 6:57am

P.THIRUPATHI REDDY

Updated 23-Mar-13 7:11am

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Volynsky Alex 23-Mar-13 13:48pm

http://msdn.microsoft.com/en-us/library/6aw8xdf2%28v=vs.80%29.aspx

Character: Carriage return
ASCII Representation: CR
ASCII Value : 13 or 0x0d
Escape Sequence : \r

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Volynsky Alex · Answer 1 · 2013-03-23T07:54:00

Solution 2

Totally agree with the previous answer!

'\r' is the carriage return character.
The following repeats the loop until the user has pressed the Return key.

C++

while(ch!='\r')
{
  ch=getche();
}

Posted 23-Mar-13 7:54am

Volynsky Alex

OriginalGriff · Answer 2 · 2013-03-23T07:27:00

It's not generally a compiler thing, it's an OS interpretation thing.
'\r' is a character called Carriage Return - because in the days of teletypes that is what it did, it moved the carriage (i.e. print head) to the left hand side of the paper.
Different system interpret what it does differently: some move the cursor to the far left, some move it to the left and down a line.

If you can, and you want to be portable, avoid using it directly - declare a constant instead so you cna change it if you need to.