Compilare: user.cpp: In function ‘int main()’: user.cpp:42:21: warning: ‘y_fin’ may be used uninitialized in this function [-Wmaybe-uninitialized] s = (s | y) << 6; ^ user.cpp:104:9: note: ‘y_fin’ was declared here int y_fin; ^ user.cpp:43:12: warning: ‘x_fin’ may be used uninitialized in this function [-Wmaybe-uninitialized] s = (s | x) << 9; ^ user.cpp:103:9: note: ‘x_fin’ was declared here int x_fin; ^ user.cpp:42:21: warning: ‘y_beg’ may be used uninitialized in this function [-Wmaybe-uninitialized] s = (s | y) << 6; ^ user.cpp:102:9: note: ‘y_beg’ was declared here int y_beg; ^ user.cpp:43:12: warning: ‘x_beg’ may be used uninitialized in this function [-Wmaybe-uninitialized] s = (s | x) << 9; ^ user.cpp:101:9: note: ‘x_beg’ was declared here int x_beg; ^