Compilare: main.cpp: In function 'int main()': main.cpp:55:14: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] char ch; ^~ main.cpp:76:40: warning: 'solj' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << soli << " " << solj << "\n"; ^~~~ main.cpp:76:25: warning: 'soli' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << soli << " " << solj << "\n"; ^~~