IOStream 操作说明

从MSDN上拿下关于IO Stream类的操作说明，方便以后使用：

class basic_ios: 

bad	Indicates a loss of integrity of the stream buffer.
clear	Clears all error flags.
copyfmt	Copies flags from one stream to another.
eof	Indicates if the end of a stream has been reached.
exceptions	Indicates which exceptions will be thrown by the stream.
fail	Indicates failure to extract a valid field from a stream.
fill	Specifies or returns the character that will be used when the text is not as wide as the stream.
good	Indicates the stream is in good condition.
imbue	Changes the locale.
init	Called by basic_ios constructors.
move	Moves all values, except the pointer to the stream buffer, from the parameter to the current object.
narrow	Finds the equivalent char to a given char_type.
rdbuf	Routes stream to specified buffer.
rdstate	Reads the state of bits for flags.
set_rdbuf	Assigns a stream buffer to be the read buffer for this stream object.
setstate	Sets additional flags.
swap	Exchanges the values in this basic_ios object for those of another basic_ios object. The pointers to the stream buffers are not swapped.
tie	Ensures that one stream is processed before another stream.
widen	Finds the equivalent char_type to a given char.

 

class istream

gcount	Returns the number of characters read during the last unformatted input.
get	Reads one or more characters from the input stream.
getline	Reads a line from the input stream.
ignore	Causes a number of elements to be skipped from the current read position.
peek	Returns the next character to be read.
putback	Puts a specified character into the stream.
read	Reads a specified number of characters from the stream and stores them in an array.
readsome	Read from buffer only.
seekg	Moves the read position in a stream.
sentry	The nested class describes an object whose declaration structures the formatted input functions and the unformatted input functions.
swap	Exchanges this basic_istream object for the provided basic_istream object parameter.
sync	Synchronizes the input device associated with the stream with the stream's buffer.
tellg	Reports the current read position in the stream.
unget	Puts the most recently read character back into the stream.

 

class ostream

endl	Terminates a line and flushes the buffer.
ends	Terminates a string.
flush	Flushes the buffer.
	Exchanges the values of the left basic_ostream object parameter for those of the right basic_ostream object parameter.