Ad:

C++ Tutorial
Views: 68533

Dec 18th, 2008

Re: How do I flush the input stream?

Click to Expand / Collapse Quote originally posted by Traicey ...

Why should you complicate things while there is a easy way out, I mean C++ alone is complicated

I totally agree with you, all you want to get is one line of string and see what you are supposed to do, as if it is rocket science..

serkan sendur

Banned

Offline

2,057 posts
since Jan 2008

Permalink

Jun 20th, 2010

Re: "Flushing" the input stream

I love it! Would it be possible to make cin.get() save the string as well as the escape character (commonly '\n'). This way it wouldn't ever be 'nothing' because you'd always get the \n character at least. I also have much use for the \n character because its easy to remove and sometimes annoying to re-add.

u8sand

Junior Poster

Offline

131 posts
since Dec 2008

Permalink

Jun 27th, 2010

Re: "Flushing" the input stream

have you tried cin.ignore();

here's an example

c++ Syntax (Toggle Plain Text)
#include <iostream>
using namespace std;
 
	int main(){
		int num = 0;
 
		//literal output
		cout << "enter a number";
		//input from keyboard(includes /n when enter is pressed)
		cin >> num;
		//variable output
		cout << "you entered: "<< num;
		//pause so output can be read
		cin.ignore();   //CLEAR INPUT STREAM
		cin.get();   //read any input
	}
#include <iostream>
using namespace std;

	int main(){
		int num = 0;

		//literal output
		cout << "enter a number";
		//input from keyboard(includes /n when enter is pressed)
		cin >> num;
		//variable output
		cout << "you entered: "<< num;
		//pause so output can be read
		cin.ignore();   //CLEAR INPUT STREAM
		cin.get();   //read any input
	}

Last edited by andersondo; Jun 27th, 2010 at 2:56 pm.

andersondo

Newbie Poster

Offline

1 posts
since Jun 2010

Permalink

Jul 11th, 2010

-3

go low-level

Forget iostream.

cpp Syntax (Toggle Plain Text)
#include <conio.h>
#define IOFLUSH {while(_kbhit())_getch();}
#define PAUSE {if(!_getch())_getch();}
#include <conio.h>
#define IOFLUSH {while(_kbhit())_getch();}
#define PAUSE {if(!_getch())_getch();}

wisaacs

Light Poster

Offline

46 posts
since Jun 2010

Permalink

Aug 15th, 2010

-1

Re: "Flushing" the input stream

USe fflush() see it helps??

prerit

Newbie Poster

Offline

6 posts
since Aug 2010

Permalink

Aug 23rd, 2010

Re: "Flushing" the input stream

>have you tried cin.ignore();
That solution is incomplete, hence the existence of this thread. Did you even bother reading it?

>Forget iostream.
>USe fflush() see it helps??
Please don't riddle my thread with bad advice. If you don't understand why your solutions are hideous, you have no business suggesting them to other people. Learn first, then teach.

Narue

Bad Cop

Offline

11,807 posts
since Sep 2004

Permalink

Aug 24th, 2010