Compilare: user.cpp: In function ‘int main()’: user.cpp:15:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[2000010]’ [-Wformat=] scanf("%s %s",&a,&b); ^ user.cpp:15:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[2000010]’ [-Wformat=]