How to read until a blank line?

[SJ]

Hi I'm working on a spoj problem that requires reading in a series of inputs in cin until a blank line, for example,

1 2 3
4 5 6
10 20 30
*blank line here*

I'm noobishly new to c++ so I'm using cin>> to read in each number, but i don't know when to stop reading in. Is there a "blank line character"? When i program in java i would read in a string, check if it's null, if not then parse it - not sure if that's the way to go in c++. So, can someone give me suggestions?

[btiffin]

Hi,

Remove whitespace and newline, and if you have an empty string, you have a blank line. Or count them and compare to length; same effect, faster.

Or is you are using String, look through the STL or stdlib for a trim type operation or smart empty test.

Cheers

[OneOffDriveByPoster]

Random bits of a program that seems to do what you describe:

c++:

#include <iostream> #include <sstream> #include <string>       getline(cin, s);       istringstream ss(s);

[SJ]

ahh ty guys, got it working