How can i write continuation of a text file?

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Hi.
I have function and i do not know what events are occurred in it. And I used it in many of the main, If i write a file by "ostream" , events are wrote successfully but when the function recalled, the events are cleaned from the text file and it start's to write from the first of the file!!
~~So, How can i write as appendix in a file ( such as text files ) for continuation?~~
How do I append to an existing text file?

Posted 18-Jun-12 14:43pm

smss IR

Updated 18-Jun-12 16:27pm

Wes Aday

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[no name] 18-Jun-12 20:49pm

The word you are looking for is "append"

smss IR 18-Jun-12 20:53pm

continuation -> append???

[no name] 18-Jun-12 20:55pm

Yes. You want to append to your log file or whatever it is. Append means to add onto.

smss IR 18-Jun-12 20:58pm

in which sentence?

[no name] 18-Jun-12 21:05pm

What do you mean in which sentence? You whole question is about appending to a file not what you call "continuation".

smss IR 18-Jun-12 21:51pm

Is a solution with sprinf() function?

smss IR 19-Jun-12 17:07pm

Thanks Wes Aday. :)

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Vitaly Tomilov · Accepted Answer · 2012-06-18T14:55:00

Solution 2

Use seekp to set the pointer to the end of the file.

For details read this: ostream::seekp[^]

Posted 18-Jun-12 14:55pm

Vitaly Tomilov

enhzflep · Accepted Answer · 2012-06-18T14:54:00

Solution 1

I suggest you use fstream instead. It will allow you to specify the mode in which the fie is opened - so you can specify whether to append or truncate an existing file.

See here: http://www.cplusplus.com/reference/iostream/fstream/open/[^]

Posted 18-Jun-12 14:54pm

enhzflep