Compilare: user.cpp: In function ‘void Read(int&)’: user.cpp:16:80: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] ++Bpos == BufferSize ? fread(Buffer, 1, BufferSize, stdin), Bpos = 0: 0; ^ user.cpp:17:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for (; '0' <= Buffer[Bpos] && Buffer[Bpos] <= '9'; ++Bpos == BufferSize ? fread(Buffer, 1, BufferSize, stdin), Bpos = 0: 0) ^ user.cpp: In function ‘int main()’: user.cpp:237:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kthvalue.in", "r", stdin); ^ user.cpp:240:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer, 1, BufferSize, stdin); ^