Compilare: user.cpp:5:0: warning: ignoring #pragma optimize [-Wunknown-pragmas] #pragma optimize("s", on) ^ user.cpp: In function ‘int main()’: user.cpp:19:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FIN, "r", stdin); ^ user.cpp:20:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FOUT, "w", stdout); ^ user.cpp:29:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (str.clear(), scanf("%c", &c); c != '"'; scanf("%c", &c)) ^ user.cpp:29:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (str.clear(), scanf("%c", &c); c != '"'; scanf("%c", &c)) ^ user.cpp:37:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (scanf("%c", &c); c < 33; scanf("%c", &c)); ^ user.cpp:37:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (scanf("%c", &c); c < 33; scanf("%c", &c)); ^ user.cpp:40:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (str.clear(), scanf("%c", &c); c != '"'; scanf("%c", &c)) ^ user.cpp:40:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (str.clear(), scanf("%c", &c); c != '"'; scanf("%c", &c)) ^ user.cpp:43:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (str.clear(); c >= '0' && c <= '9'; scanf("%c", &c)) ^