Compilare: user.cpp: In member function ‘int OutputDevice::writeFill(int)’: user.cpp:316:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (chunkSize > count) chunkSize = count; ^ user.cpp: In member function ‘int OutputDevice::writeString(const char*, int, bool)’: user.cpp:345:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (chunkSize > count) chunkSize = count; ^ user.cpp: In function ‘int main()’: user.cpp:641:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in", "r", stdin); ^ user.cpp:642:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out", "w", stdout); ^