Compilare: user.cpp: In function ‘void CountingSort1(unsigned int*, unsigned int*)’: user.cpp:12:62: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(; i != 0x800; index[++i] = index[~-i] + frequence[~-i]); ^ user.cpp:12:62: warning: operation on ‘i’ may be undefined [-Wsequence-point] user.cpp: In function ‘void CountingSort2(unsigned int*, unsigned int*)’: user.cpp:23:62: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(; i != 0x800; index[++i] = index[~-i] + frequence[~-i]); ^ user.cpp:23:62: warning: operation on ‘i’ may be undefined [-Wsequence-point] user.cpp: In function ‘void CountingSort3(unsigned int*, unsigned int*)’: user.cpp:34:62: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(; i != 0x800; index[++i] = index[~-i] + frequence[~-i]); ^ user.cpp:34:62: warning: operation on ‘i’ may be undefined [-Wsequence-point] user.cpp: In function ‘void read(unsigned int&)’: user.cpp:45:23: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] while(inBuffer[p] < 0x30 | inBuffer[p] > 0x39) ^ user.cpp:50:23: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(inBuffer[p] > 0x2F & inBuffer[p] < 0x3A) ^ user.cpp: At global scope: user.cpp:60:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void itoa(unsigned int x) ^ user.cpp:39:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void read(unsigned int &num) ^ user.cpp: In function ‘void read(unsigned int&)’: user.cpp:47:23: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x8000 || (fread(inBuffer, 0x1, 0x8000, stdin), p = 0x0); ^ user.cpp:54:23: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x8000 || (fread(inBuffer, 0x1, 0x8000, stdin), p = 0x0); ^ user.cpp: In function ‘int main()’: user.cpp:82:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in", "r", stdin); ^ user.cpp:83:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out", "w", stdout); ^