Write in file at specific point...

[ITFreak]

While working with filing in C++, is it possible to write at some specific point?
Let's say I create a file named "temp.txt" which contains the following contents:

====================
C++ is one of the most popular programming languages with application domains including systems software, application software, device drivers, embedded software, high-performance server and client applications, and entertainment software such as video games. [** AT THIS POINT **] Several groups provide both free and proprietary C++ compiler software, including the GNU Project, Microsoft, Intel and Embarcadero Technologies. C++ has greatly influenced many other popular programming languages, most notably C# and Java.
===================

And I want to make an addition of a sentence where the first sentence ends (where [** AT THIS POINT **] is written). How can I do it? I've tried so many things, yet failed. I'm facing this problem while working on a program.

[Need4Sleep]

You could create a loop that searches for a specific word in the paragraph, then maybe adds a sentence at that paragraph? Something like

while(File>>Search)
{if(Search == "games.") {File << "AT THIS POINT ADD STUFF"}

. Just an idea