Stringstream string stream of C/C ++ STL container

 

Header file for input and output <iostream>
Header file of the string stream <sstream>
File stream header file <fstream>

Usage of stringstream

1. Use input and output for Data Conversion

StringstreamSs_stream;
Ss_stream <I;// Input int to the stream
Ss_stream>Str;// Output the value in ss_stream to Str

// Note: if multiple data conversions are performed, you must call clear () to set the conversion mode.
Ss_stream <"456";
Ss_stream> I;// First convert the string to int
Ss_stream.Clear();
Ss_stream <True;
Ss_stream> I;// Convert the bool type to int type. If clear is not performed before, the I will fail.

// Result of running clear
I = 456.
I = 1
// No result for running clear
I = 456.
I = 8800090900.
 

 

 

2. Support for input and output of char *

CharSz_buf [20];
Ss_stream <8888;
Ss_stream> sz_buf; // directly output the number to the sz_buf character array.
 

 

3. to store the list of variable data

 Stringstream Ss_stream;
Ss_stream < "String 1" < Endl ;
Ss_stream < "String 2" < Endl ;
Ss_stream < "String 3" < Endl ;
Ss_stream <"String 4" < Endl ;
Ss_stream < "String 5" < Endl ;

 Char Buffer [100];
 While (Ss_stream.getline (buffer, Sizeof (Buffer ))
{
 Printf ( "MSG = % s \ n" , Buffer );
}
Ss_stream ("" ); // Release resources in the string stream 

 // Or use string to receive 
 Stringstream Ss_stream;
 String Stemp;
 While (Getline (ss_stream, stemp ))
{
Task_download (stemp. C_str (), Relate. C_str ());
}