Compilare: main.cpp: In function 'int main()': main.cpp:84:59: warning: 'cf' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << k << '\n' << ai << '\n' << lf << ' ' << cf << ' ' << af; ^~~ main.cpp:84:46: warning: 'lf' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << k << '\n' << ai << '\n' << lf << ' ' << cf << ' ' << af; ^~~