Compilare: user.cpp: In function ‘int main()’: user.cpp:18:27: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[2000010]’ [-Wformat=] fscanf(f,"%s %s",&A,&B); ^ user.cpp:18:27: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[2000010]’ [-Wformat=] user.cpp:16:20: warning: unused variable ‘j’ [-Wunused-variable] register int i,j; ^