'_fileno' was not declared in this scope

[jimobama]

'_fileno' was not declared in this scope;
At first I was though I needed to stdio.h in other for it to work file , I try it I found is not my problem, but the library issue so decided to passed it.
I have check online if this common problem , I have notice that alot of furum have discussed about it ut none of them actual solved it. When I ignore the line of the code at 4925 in CImg.h it compile okay.

[dtschump]

Maybe some additional info about your environement (OS, compiler, version ?) could help to make me understand what happens.
Thanks.

[dtschump]

Searching for this problem on the Internet makes clear that it is actually a bug in stdio.h that happens when the -std=c++11 flag is enabled. There are multiple work-around, like using flag -std=gnu++11 instead.
See : http://stackoverflow.com/questions/22081825/compiling-cimg-with-c0x-and-mingw

This is not something I can fix in the header file.