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Sorry: was beg, not big.
The positioning don't work simply with seekg(...).
I will try to retrive with tellg...

Thank you very much for the reply.
Best regards!

i did like this and didn't works:


// ...
char s[200];

ifstream fin;
fin.open("C:\\in.txt");

Thank you for the reply but this is not my point, because i have thousands of lines, i don't want to store all the lines in memory. I wonder how can i close the stream or the file and open it again...

Pls, help me: how can i do this:

I read a text file line-by-line using ifstream.getline();
How can i reposition the pointer so after i read for example 3 lines to start reading from the first...

Thank you for reply!
That's right with the error message.

Ok, pCls1 points to a valid object that has its own memory. Why can not use delete for deleting pCls1? I know, if i using 'new' it works,...

What is hapening here:
I can declare a pointer to cls1 and I can access (set) the cls1 object without 'new' operator?! Why?


MyClass cls1;
MyClass* pCls1 = &cls1;

pCls1->set(int i);...