It's a preprocessor directive. The compiler injects the array based on your instruction. https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3017.htm#appendix ht

It's a preprocessor directive. The compiler injects the array based on your instruction. https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3017.htm#appendix https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3017.htm#a...