Compilare: main.cpp: In function 'int main()': main.cpp:79:20: warning: 'yy' may be used uninitialized [-Wmaybe-uninitialized] 79 | int y = xx - yy; | ~~~^~~~ main.cpp:58:27: note: 'yy' was declared here 58 | int opt = -1, xx, yy; | ^~ main.cpp:79:20: warning: 'xx' may be used uninitialized [-Wmaybe-uninitialized] 79 | int y = xx - yy; | ~~~^~~~ main.cpp:58:23: note: 'xx' was declared here 58 | int opt = -1, xx, yy; | ^~