I/Oストリームクラス

既定義のchar型特定と標準ストリーム

typedef basic_ios<char> ios;
typedef basic_istream<char> istream;
typedef basic_ifstream<char> ifstream;
typedef basic_iostream<char> iostream;
typedef basic_istringstream<char> istringstream;

typedef basic_ostream<char> ostream;
typedef basic_ofstream<char> ofstream;
typedef basic_fstream<char> fstream;
typedef basic_stringstream<char> stringstream;
typedef basic_ostringstream<char> ostringstream;

typedef basic_streambuf<char> streambuf;
typedef basic_stringbuf<char> stringbuf;
typedef basic_filebuf<char> filebuf;

istream cin;
ostream cout;
ostream cerr;
ostream clog;