Compilare: user.cpp: In function ‘void read(int&)’: user.cpp:79:35: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] while((current = inBuffer[p]) < 0x30 | current > 0x39) ^ user.cpp:79:54: warning: operation on ‘current’ may be undefined [-Wsequence-point] while((current = inBuffer[p]) < 0x30 | current > 0x39) ^ user.cpp:86:35: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while((current = inBuffer[p]) > 0x2F & current < 0x3A) ^ user.cpp:86:54: warning: operation on ‘current’ may be undefined [-Wsequence-point] while((current = inBuffer[p]) > 0x2F & current < 0x3A) ^ user.cpp: At global scope: user.cpp:98:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void itoa(int x) ^ user.cpp:71:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void read(int &num) ^ user.cpp: In function ‘void read(int&)’: user.cpp:83:24: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x30D40 || (fread(inBuffer, 0x1, 0x30D40, stdin), p = 0x0); ^ user.cpp:90:24: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++p != 0x30D40 || (fread(inBuffer, 0x1, 0x30D40, stdin), p = 0x0); ^ user.cpp: In function ‘int main()’: user.cpp:126:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bellmanford.in", "r", stdin); ^ user.cpp: In function ‘void read(int&)’: user.cpp:93:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] sign != 0x2D || (num = -num); ^ user.cpp: In function ‘int main()’: user.cpp:93:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:73:10: note: ‘sign’ was declared here char sign, current; ^ user.cpp:93:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] sign != 0x2D || (num = -num); ^ user.cpp:73:10: note: ‘sign’ was declared here char sign, current; ^ user.cpp:93:33: warning: ‘sign’ may be used uninitialized in this function [-Wmaybe-uninitialized] sign != 0x2D || (num = -num); ^ user.cpp:73:10: note: ‘sign’ was declared here