Compilare: main.cpp: In function 'void read(int&)': main.cpp:10:21: warning: suggest parentheses around comparison in operand of '|' [-Wparentheses] while(inBuffer[p] < 0x30 | inBuffer[p] > 0x39) { ~~~~~~~~~~~~^~~~~~ main.cpp:13:21: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] while(inBuffer[p] > 0x2F & inBuffer[p] < 0x3A) { ~~~~~~~~~~~~^~~~~~ main.cpp: At global scope: main.cpp:22:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void write(unsigned int x) { ^~~~~ main.cpp:6:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void read(int &num) { ^~~~ main.cpp: In function 'void read(int&)': main.cpp:11:20: 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); ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:15:20: 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); ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("mergeheap.in", "r", stdin); ^ main.cpp:96:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("mergeheap.out", "w", stdout); ^