Compilare: main.cpp: In function 'int main()': main.cpp:102:25: warning: unused variable 'xx' [-Wunused-variable] int xx = i + dx[k], yy = j + dy[k]; ^~ main.cpp:102:41: warning: unused variable 'yy' [-Wunused-variable] int xx = i + dx[k], yy = j + dy[k]; ^~ main.cpp:106:32: warning: 'r.gigi::cul' may be used uninitialized in this function [-Wmaybe-uninitialized] char costi = r.cul - 1 + 'a'; ~~~~~~~~~~^~~~~ main.cpp:105:38: warning: 'r.gigi::y' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << r.x << ' ' << r.y << '\n'; ^~~~ main.cpp:105:24: warning: 'r.gigi::x' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << r.x << ' ' << r.y << '\n'; ^~~