How to open a file

I’ve a little problem: I have to open a linker file that has .a extension. I use Dev-C++.

4 Answers 4

.a files are ar archives (something like zip archives) of object ( .o ) files. You can list files in .a file using ar program:

And extract all files:

Files with the .a extension are static libraries using Unix file naming conventions. They’re not much more than an indexed collection of object code. You don’t so much open them (unless you’ve got a tool like nm or gdb available, both of which can do sensible things with a library if not necessarily what you might want) as tell the linker to use them when linking. With most linkers, it’s important to put all libraries (both static and dynamic/shared) after your main program code on the linker command line and the order of libraries matters too.

Do you really mean that you want to open the file, or rather that you wish to link it with your code?

Dev-C++ by default is installed with the MinGW/GCC compiler. If the archive is not specifically built to work with MinGW (for example it may be a Cygwin or Linux archive), you will not be able to link it to MinGW generated code.

If the archive is a MinGW/GCC compatible library, then you simply link it to your code. In Dev-C++ you need to add the archive to the project linker options, either by adding the full path to the archive (there’s a button for that in the project options), or by placing the archive in a path defined by a -L

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If you simply want to inspect an archive to determine what external symbols it provides, then the nm utility can be used for that. If you want to extract the individual object files, then use the ar, though I cannot think of a good reason why you’d want to do either.

Updated: November 4, 2019

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This wikiHow teaches you different ways to open files on your Windows PC. If you have the app you used to create the file, you can open the file from within the app. You can also browse to the file using the Windows File Explorer or from the Documents folder.

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Answer Wiki

The file can be anything. Some files can be opened in many programs while some can be opened in a particular program only.

Thus for the sake of simplicity, let’s assume that the file belongs to one of the famous formats, then

You need some tools:

  • Vlc player.
  • Winrar.
  • Adobe reader, Notepad, MS office.

First drop your file in the vlc. If the file.