Compilare: main.cpp: In function 'int main()': main.cpp:71:13: warning: unused variable 'car' [-Wunused-variable] int car; ^~~ main.cpp:99:59: warning: 'ckm' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << x << " " << y << "\n" << (char)(ckm + 'a' - 1); ~~~~~~~~~~~^~~~ main.cpp:99:62: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << x << " " << y << "\n" << (char)(ckm + 'a' - 1); ^ main.cpp:99:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << x << " " << y << "\n" << (char)(ckm + 'a' - 1); ^~~