Compilare: user.cpp: In function ‘int main()’: user.cpp:69:5: warning: ‘n3’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (i=1;i<=n3;i++) ^ user.cpp:65:5: warning: ‘n2’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (i=1;i<=n2;i++) ^