Compilare: user.c: In function ‘CountingSort’: user.c:9:29: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(; i != 0x7FF; index[++i] = index[~-i] + frequence[~-i]); ^~~ user.c:9:29: warning: operation on ‘i’ may be undefined [-Wsequence-point] user.c: In function ‘get_number’: user.c:20:42: warning: value computed is not used [-Wunused-value] inBuffer[p] > 0x2F || ++p != 0x20000 || (fread(inBuffer, 0x1, 0x20000, stdin), p = 0x0); ^~ user.c:26:24: warning: value computed is not used [-Wunused-value] ++p != 0x20000 || (fread(inBuffer, 0x1, 0x20000, stdin), p = 0x0); ^~ At top level: user.c:34:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void put_number(size_t x) ^~~~~~~~~~ user.c:14:39: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) size_t get_number() ^~~~~~~~~~ user.c:3:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void CountingSort(size_t N, size_t A[], size_t B[], size_t digit) ^~~~~~~~~~~~ user.c: In function ‘get_number’: user.c:20:46: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] inBuffer[p] > 0x2F || ++p != 0x20000 || (fread(inBuffer, 0x1, 0x20000, stdin), p = 0x0); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c:26:28: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x20000 || (fread(inBuffer, 0x1, 0x20000, stdin), p = 0x0); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c: In function ‘main’: user.c:56:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c:57:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~