Compilare: user.cpp: In function ‘int main()’: user.cpp:169:10: warning: variable ‘tip’ set but not used [-Wunused-but-set-variable] int N, tip; ^ user.cpp:164:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv8.in", "r", stdin); ^ user.cpp:165:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv8.out", "w", stdout); ^ user.cpp: In function ‘char getChar()’: user.cpp:16:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf1, 1, BUF_SIZE, stdin); ^