更改 cin (c++) 的分隔符

如果您正在读取/etc/passwd 样式的文件，以下程序将分别读取每个 :-分隔的单词.

If you are reading a file in the style of /etc/passwd, the following program will read each :-delimited word separately.

#include <locale>
#include <iostream>


struct colon_is_space : std::ctype<char> {
  colon_is_space() : std::ctype<char>(get_table()) {}
  static mask const* get_table()
  {
    static mask rc[table_size];
    rc[':'] = std::ctype_base::space;
    rc['
'] = std::ctype_base::space;
    return &rc[0];
  }
};

int main() {
  using std::string;
  using std::cin;
  using std::locale;

  cin.imbue(locale(cin.getloc(), new colon_is_space));

  string word;
  while(cin >> word) {
    std::cout << word << "
";
  }
}

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