How to get string from a file terminating with another string

[aakashjohari]

I want to get a string from file terminating with another string. As

We have data file data.txt and the text in it is -

kkasdasjdnajsdnjasdasd#kjlkldasfkldsklfdsklfk##skjaskjdajdjasdasdjkas##

i want to get string from this file ending with "##".

Please provide me the code that i can use for this purpose in c++. (fstream)

[Faldrax]

You will need to read the stream character by character and check for last two characters read = ##.

See http://www.cplusplus.com/doc/tutorial/files.html for info on file I/O.

[cjmalloy]

You could try the getline function from the string library:

string buff;
ifstream inf;

do
{
    getline(inf, buff, '#');
} while (inf.peek()!='#');
//buff should now hold the string you want 

This will get the FIRST string ending in '##', ie the second one you have there.

[aakashjohari]

cjmalloy, the code you have written is not giving me the right answer. it stops, while executing it. please check and provide me the correct code.

[cjmalloy]

It does if you want the second substring.

[Smok006]

http://www.cplusplus.com/reference/iostream/istream/getline.html
Here u have the declaration of getline();....The second parameter of that function cannot be a string, it must be an int.

Faldrax said exactly what u should do and there are many ways to do it.

[cjmalloy]

http://www.cplusplus.com/reference/string/getline.html

[Smok006]

Ooops...Sorry...didn't know that

[danthehat]

Hey aakashjohari,

You're on a forum belonging to one of the best C++ reference sites on the net. Read this http://www.cplusplus.com/reference/iostream/istream/

And figure it out.

Thanks,
D