Programming Forums - View Single Post

Narue · May 31st, 2006, 4:01 PM

>Try clearing the stream by using 'cin.sync();' before 'cin.get();'.
Um, no. cin.sync() isn't guaranteed to do anything meaningful, much less "clear" the stream. The only portable way to read and discard leftover characters is to read them either with a loop, or with cin.ignore():

(Toggle Plain Text)

// Loop
char ch;
while ( cin.get ( ch ) && ch != '\n' )
  ;

// Ignore
#include <ios>
#include <limits>
cin.ignore ( numeric_limits<streamsize>::max(), '\n' );

May 31st, 2006, 4:01 PM	#13
Narue Professional Programmer Join Date: Sep 2005 Posts: 419 Rep Power: 4	>Try clearing the stream by using 'cin.sync();' before 'cin.get();'. Um, no. cin.sync() isn't guaranteed to do anything meaningful, much less "clear" the stream. The only portable way to read and discard leftover characters is to read them either with a loop, or with cin.ignore(): (Toggle Plain Text) // Loop char ch; while ( cin.get ( ch ) && ch != '\n' ) ; // Ignore #include <ios> #include <limits> cin.ignore ( numeric_limits<streamsize>::max(), '\n' ); // Loop char ch; while ( cin.get ( ch ) && ch != '\n' ) ; // Ignore #include <ios> #include <limits> cin.ignore ( numeric_limits<streamsize>::max(), '\n' ); __________________ Even if the voices aren't real, they have some pretty good ideas.