目录3.2.1流插入运算符.......................................................353.2.2连续使用流插入/流读取运算符........................................373.2.3输出 char*类型的变量...............................................373.2.4用成员函数 put 输出字符和 put 函数的连续调..........................383. 4输入流..................................................................393.4.1流读取运算符.......................................................393.4.2成员函数 get 和 getline............................................................................................413.5成员函数 read、gcount 和 write 的无格式输入/输出...........................443.6流操纵算子..............................................................453.6.1整数流的基数：流操纵算子 dec、oct、hex 和 setbase........................................453.6.2设置浮点数精度(precision、setprecision).................................................................463.6.3设置域宽(setw、width)..............................................................................................473.6.4用户自定义的流操纵算子.............................................483.7流格式状态..............................................................493.7.1格式状态标志.......................................................503.7.2尾数零和十进制小数点(ios::showpoint)...................................................................503.7.3对齐(ios::left、ios::right、ios::internal)....................................................................513.7.4设置填充字符(fill、setfill)........................................................................................533.7.5整数流的基数：(ios::dec、ios::oct、ios::hex、ios::showbase)...............................543.7.6浮点数和科学记数法(ios::scientific、ios::fixed)......................................................553.7.7大/小写控制(ios::upercase)........................................................................................563.7.8设置及清除格式...
