Compilare: user.cpp: In function ‘int main()’: user.cpp:72:17: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int*’ [-Wformat=] printf("%d", &n); ^ user.cpp:74:32: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int*’ [-Wformat=] printf("%d %d", &op, &x); ^ user.cpp:74:32: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘int*’ [-Wformat=] user.cpp:69:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.in", "r", stdin); ^ user.cpp:70:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.out","w", stdout); ^