Compilare: user.cpp: In function ‘int main()’: user.cpp:57:56: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l1 << " " << c1 << " " << l2 << " " << c2; ^ user.cpp:57:41: warning: ‘l2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l1 << " " << c1 << " " << l2 << " " << c2; ^ user.cpp:57:28: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l1 << " " << c1 << " " << l2 << " " << c2; ^ user.cpp:57:15: warning: ‘l1’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l1 << " " << c1 << " " << l2 << " " << c2; ^