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Edited text of question<br />

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hi there,<br />
&nbsp; &nbsp; &nbsp; &nbsp; I am doing a project on creating a simple database (storing particulars of friends) using C++. The user is suppose to key in the required data and the program is to search for the data in the external file and display it on the screen for the user and therefore the user can edit or just view the data he/she wants. Searching for the data in the external file is something which i cannot do since the examples given by our prof is not sufficient and so are the books I borrow from the library school.<br />
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And so what kind of function in C++ can it search for the required data (the file is suppose fill with alot of data ) and display it on the screen. <br />
It will be a great help if it is in source code 
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hi there,
        I am doing a project on creating a simple database (storing particulars of friends) using C++. The user is suppose to key in the required data and the program is to search for the data in the external file and display it on the screen for the user and therefore the user can edit or just view the data he/she wants. Searching for the data in the external file is something which i cannot do since the examples given by our prof is not sufficient and so are the books I borrow from the library school.

And so what kind of function in C++ can it search for the required data (the file is suppose fill with alot of data ) and display it on the screen. 
It will be a great help if it is in source code 

what kind of function is thiS?

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.