Hi,
I am using KDevelop & Cmake & MSVC 2010 Express on Microsoft Windows 10 OS . [ I mean I am trying to use ]

When I create a new project I have to select Standard->Terminal [ Which is C++ based ] [ Actually I want C ]
Then I create a new file "main.c" in my new project from within KDevelop .
But KDevelop doesn't automatically update CMakeLists.txt . [ I mean "main.c" is not automatically added to CMakeLists.txt ]
So when I try to Build that project it compiles "main.cpp" instead of "main.c" .
But if I manually edit CMakeLists.txt and replace "main.cpp" with "main.c" in that file Cmake works.
I mean If I try to build that project it succeeds .

So is there any way to make sure that KDevelop will automatically update CMakeLists.txt and reconfigure Cmake .
How can I achieve this ?

That's not implemented, no.

You'll have to maintain the CMakeLists.txt files yourself. The CMake language is too complex to be able to reliably modify these files automatically.