Compilare: user.cpp: In function ‘bool white(pixel)’: user.cpp:40: warning: suggest parentheses around comparison in operand of ‘|’ user.cpp:41: warning: suggest parentheses around comparison in operand of ‘|’ user.cpp: In function ‘int main()’: user.cpp:65: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:68: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:69: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:85: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int getDigit(int, int)’: user.cpp:60: warning: control reaches end of non-void function