Compilare: main.cpp: In function 'int main()': main.cpp:99:23: warning: 'val3' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<val3; ^ main.cpp:89:25: warning: 'val2' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<val2<<"\n"; ^~~~ main.cpp:79:24: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<val<<"\n"; ^~~~