tellp() in file handling with c++ with example
The tellp() function is used with output streams, and returns the current “put” position of the pointer in the stream. It has no parameters and return a value of the member type pos_type, which is an integer data type representing the current position of the put stream pointer.
Return – Current output position indicator on success otherwise return -1.
Example 1 –
"the current position of pointer is :"
<< file.tellp() << endl;
the current position of pointer is :-1
In the above code the tellp() returns the current position to which it point in a file.
Example 2 –
"this is an apple"
position = file.tellp();
file.seekp(position - 7);
this is a sample
Here tellp() function returns the position of pointer then using seekp() function the pointer is shift back from n position here it shift 7 position back and then insert the content at that position .
This article is contributed by Shivani Baghel . If you like GeeksforGeeks and would like to contribute, you can also write an article using write.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.