Compilare: user.cpp: In function ‘int main()’: user.cpp:66:65: warning: right operand of comma operator has no effect [-Wunused-value] x = get_number(), y = get_number(), z = y - x + 0x1, msb; ^ user.cpp: At global scope: user.cpp:24:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void put_number(unsigned int x) ^~~~~~~~~~ user.cpp:9:45: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) unsigned int get_number() ^~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:44:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.in", "r", stdin); ^ user.cpp:45:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.out", "w", stdout); ^ user.cpp:47:48: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(inBuffer, 0x1, IN_BUFFER_SIZE, stdin); ^