Compilare: user.cpp: In function ‘int main()’: user.cpp:13:24: warning: unused variable ‘f’ [-Wunused-variable] long long n, i, a, c, f; ^ user.cpp:25:20: warning: ‘h’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<g+1<<" "<<h+1<<" "<<c*2; ^ user.cpp:25:10: warning: ‘g’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<g+1<<" "<<h+1<<" "<<c*2; ^