How to compile c code in visual c++ express 2010

Question

I am trying to compile c code in VS C++ express 2010 but I get the following error trace:

1>------ Build started: Project: test4, Configuration: Release Win32 ------
1>cl : Command line error D8045: cannot compile C file 'test4.c' with the /clr option
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

When I try and compile with cpp extension I get this error trace:

1>------ Build started: Project: test4, Configuration: Release Win32 ------
1>  test4.cpp
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(86): error C2664: 'CreateFileW' : cannot convert parameter 1 from 'const char [13]' to 'LPCWSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(98): error C2664: 'CreateFileW' : cannot convert parameter 1 from 'const char [13]' to 'LPCWSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(138): error C2664: 'OpenServiceW' : cannot convert parameter 2 from 'const char [9]' to 'LPCWSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(196): error C2664: 'GetSystemDirectoryW' : cannot convert parameter 1 from 'CHAR [80]' to 'LPWSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(203): error C2664: 'lstrcatW' : cannot convert parameter 1 from 'CHAR [80]' to 'LPWSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(208): error C2664: 'CopyFile' : cannot convert parameter 1 from 'const char [13]' to 'LPCTSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\documents and settings\rkelly1\desktop\io\test4\test4\pt_ioctl.c(236): error C2664: 'CreateServiceW' : cannot convert parameter 2 from 'const char [9]' to 'LPCWSTR'
1>          Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>test4.cpp(27): error C3861: 'kbhit': identifier not found
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Answer 1

/clr means use the .Net runtime - not the c language runtime!

Just call the file .c and it will work, there is a flag to stop you using any c++ features.

Go to properties -> c/c++ ->advanced -> compile as and select 'c'

Answer 2

When you create your project, make sure you create it as a Win32 program and not a CLR application. This setting can be changed under project properties.

Propeties -> Common Language Runtime Support is the setting you are looking for. Set it to none.