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#include <conio.h> void normvideo(void);
Resets the text attribute to what it was before the program started.
It's not safe to call this function inside static constructors, because conio needs to be initialized, and its initialization is done by a static constructor. Since you don't have any control on the order in which static constructors are called (it's entirely up to the linker), you could have problems.
If you can detect the situation when one of the conio functions is
called for the very first time since program start, you could work
around this problem by calling the
manually (this is the function called by a static constructor).
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