Firstly - Create a new C++ Win32 Project.
Then select DLL and Empty Project from the Application Settings.
From the header files, select Add > New Item
Select Header File and give it a name asm.h
Fill asm.h with the above code.
Then, from the Source files, select New Item.
Select a C++ file and give it a name asm.cpp
Enter the above code in the asm.cpp file
Select to build the solution - remedy any errors you may receive.
The build should look like this...
Now, open a new project, and select Add to Existing Project from the New Project Dialog. Give it a name. I have called mine; win_cpp_asm - copy the above code in the main.cpp source file.
From the Project Menu - select Project Dependencies.
Select Win32_ASM_DLL as your project dependency.
Make sure your code looks like this...
After successfully compiling your project - go to the Project Release folder. (If you selected Release as a build option)
This is my DOS view of the folder I released inside.
I create a file called 'infile.txt' and put a cool Xander is a Haxor inside it and save it.
Now, I run the program, and enter the encryption code 100.
As you can see, an outfile.txt was created.
This is the contents of the outfile.txt - Xander is a Haxor had been encypted!
This is how you create a DLL in Visual C++ 2005 and import the DLL for use in to a C++ Project.