Описание тега gcc-warning
GCC is the GNU Compiler Collection, encompassing the gcc C compiler and the g++ C++ compiler, among others. It has powerful warning facilities that can reveal coding errors in C and C++ code.
GCC is the GNU Compiler Collection, a collection of language compilers that use the same underlying infrastructure. The most prominent are gcc, for C, and g++, for C++. All GCC compilers have similar warning facilities, starting with -Wall and including many other -W flags. These warnings can be extremely helpful in diagnosing problems with code and improving coding style and portability.