Compilare: user.cpp: In function ‘void reader(int&)’: user.cpp:117:23: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] while(inBuffer[p] < 0x30 | inBuffer[p] > 0x39) ~~~~~~~~~~~~^~~~~~ user.cpp:122:23: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(inBuffer[p] > 0x2F & inBuffer[p] < 0x3A) ~~~~~~~~~~~~^~~~~~ user.cpp: At global scope: user.cpp:132:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void writer (unsigned int x) ^~~~~~ user.cpp:111:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void reader (int &num) ^~~~~~ user.cpp: In function ‘void reader(int&)’: user.cpp:119:24: 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:126:24: 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:155:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.in", "r", stdin); ^ user.cpp:156:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.out", "w", stdout); ^