standard c++ header not found at compile time in QtCreator

[snaqvi]

I have a simple Qt Gui application on Windows XP system that uses some standard C++ headers such as <fstream> and <string>. The program was compiling and working perfectly, but all of a sudden I started to get <fstream> no such file or directory at compile time. I would appreciate if someone can tell what could have caused it.

[ChrisW67]

You changed something and something else broke: probably compiler related default include paths. That's the level of assessment possible on the supplied information... even if this was a Qt question.

[snaqvi]

Thanks for the response. It is working now after I changed my file extensions. I found that Qt Creator was no longer recognizing *.c as C++ files, which it was doing yesterday. I must have changed something that caused it. Do you know how to make *.c files be recognized as C++ files in the compiler? Thanks.

[wysota]

Do you know how to make *.c files be recognized as C++ files in the compiler?

Why would you want to do that?