Compilare: user.cpp: In function ‘int main()’: user.cpp:29:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[101]’ [-Wformat=] fscanf(f, "%s", &sir); ^ user.cpp:22:9: warning: unused variable ‘x’ [-Wunused-variable] int n, x; ^