bug1:
在定義print函數的時候,文件輸出流沒有定義成引用導致以下報錯:
use of deleted function ‘std::basic_fstream<_CharT, _Traits>::basic_fstream(const std::basic_fstream<_CharT, _Traits>&) [with _CharT = char; _Traits = std::char_traits<char>]’
fix:
void print(Field aField, fstream )改為
void print(Field aField, fstream &)