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

 Stringstream Ss_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 ());
}