Compilare: main.cpp: In function 'int main()': main.cpp:185:22: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] char c; ^ main.cpp:196:38: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] g << x <<" " << y << '\n'; ^~~~ main.cpp:196:26: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] g << x <<" " << y << '\n'; ^~~