I downloaded Visual C++ 2010 Express Edition because I have to use a Model Checker. The Model Checker is 3 files .exe contained in a zip-file. The instruction to install the Model Checker are:
"Unzip the archive before running. You will need CL (comes with Microsoft Visual Studio) in your PATH for preprocessing. The free Visual C++ 2010 Express is sufficient."
What does it mean "You will need CL in your path for prepocessing? What must I do?
cl is the Microsoft Compiler/Linker for C and C++ code. When Visual Studio (any edition) or the Microsoft Platform SDK is installed, there will be a \bin sub directory somewhere in the installation which will include cl.exe as well as many other files in the 'compiler tool chain'. Generally this directory is included in your computer's environment PATH. If not, yu can include it there in various ways so that if cl is executed from a command line from any directory your computer will be able to locate it and won't issue a file not found error message.
If you installed to the default path, open a cmd shell and run this (or something similar). "C:\Program Files\Microsoft Visual Studio 10.0\Common7\Tools\vsvars32.bat"
That will set up the path for that shell to use VS2010. You'll need to run your Model Checker thing from that shell.