Compilare: user.cpp: In function ‘unsigned int readInt()’: user.cpp:24:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (!digit[c]) ^ user.cpp:26:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (digit[c]) { ^ user.cpp: In function ‘void hashInsert(unsigned int)’: user.cpp:43:59: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] const unsigned headPtr = (arg ^ 0x9e3779b9 + (arg << 6) + (arg >> 2)) & MOD; ^ user.cpp: In function ‘void hashErase(unsigned int)’: user.cpp:50:59: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] const unsigned headPtr = (arg ^ 0x9e3779b9 + (arg << 6) + (arg >> 2)) & MOD; ^ user.cpp: In function ‘bool hashFind(unsigned int)’: user.cpp:63:59: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] const unsigned headPtr = (arg ^ 0x9e3779b9 + (arg << 6) + (arg >> 2)) & MOD; ^ user.cpp: In function ‘int main()’: user.cpp:75:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.in", "r", stdin); ^ user.cpp:76:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.out", "w", stdout); ^ user.cpp: In function ‘char getChar()’: user.cpp:15:36: 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); ^