Is char signed or unsigned by default?

Question

In the book \"Complete Reference of C\" it is mentioned that char is by default unsigned.

But I am trying to verify this with GCC as well as Visual Stud

Answer 1

According to "The C++ Programming Language" by Bjarne Stroustrup, char is "implementation defined". It can be signed char or unsigned char depending on implementation. You can check whether char is signed or not by using std::numeric_limits::is_signed.