Compilare: user.cpp: In function ‘int main()’: user.cpp:145:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsiruri3.in", "rb", stdin); ^ user.cpp:146:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsiruri3.out", "wb", stdout); ^ user.cpp: In function ‘char getChar()’: user.cpp:31:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, BUFFSIZE, stdin); ^