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thanks for the reply <br />
pls provide me c example 
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thanks for the reply
pls provide me c example

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You could add new file extensions and their associated application by using the explorer. Right-click at a file with that extension, choose the 'Open with ...' menu item, and make the settings that for the given file type always your application should be used. At the command line (dos box) you can do the same using the ASSOC command (type assoc /?).<br />
<br />
To open the file using your app after association use <br />
<br />
ShellExecute(NULL, &quot;open&quot;, full_path_of_file, NULL, &quot;&quot;, SW_SHOW);<br />

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You could add new file extensions and their associated application by using the explorer. Right-click at a file with that extension, choose the 'Open with ...' menu item, and make the settings that for the given file type always your application should be used. At the command line (dos box) you can do the same using the ASSOC command (type assoc /?).

To open the file using your app after association use

ShellExecute(NULL, "open", full_path_of_file, NULL, "", SW_SHOW);


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Associate the file type to my own exe<br />
ex<br />
<br />
if my extension is &quot;.ex&quot;<br />
if i double click the file with extension &quot;.ex&quot; <br />
i should open with &quot;myapp.exe&quot;
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Associate the file type to my own exe
ex

if my extension is ".ex"
if i double click the file with extension ".ex" 
i should open with "myapp.exe"

File type association using c or c++

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.

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.