what is question mark(?) ?

[Intel_C_Intel]

I know that ifc uses special characters for certain errors: For instance if a real number does not suit the certain format statement, it prints asterixes(*) or in cases os 1/0 division it prints dashes(-), is there anyone who knows in which kind of errors ifc prints question marks(?) ?
If you can help me, I would be very glad.

[Steven_L_Intel1]

See my answer to your question here.

Steve