Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

istream buffer

Posted on 1997-10-03
2
Medium Priority
?
344 Views
Last Modified: 2006-11-17
int n;
cin >> n;

As the above code, I have declarced an interger variables n.
I try to input the value of n by cin. However, when I try to input a chracter as the input prompt. An error occur. The value of n is not changed.
I know that I can detect the invalid input using the cin.good().... I also try to use the cin.ignore() to delete the invalid character input from istream but fail to do this. Then how can I do to flush the istram so that the character from istream?
0
Comment
Question by:matchz
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 1

Accepted Solution

by:
ohell earned 200 total points
ID: 1170802
Looks to me like you have an eof condition. you make sure that
cin.rdstate() & ~eofstate

If the eof is not true, you can flush the stream by cin.tie()->flush()

Hope this helps
0
 

Author Comment

by:matchz
ID: 1170803
Then can I use cin.flush() ?
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is the first in a series of articles about the C/C++ Visual Studio Express debugger.  It provides a quick start guide in using the debugger. Part 2 focuses on additional topics in breakpoints.  Lastly, Part 3 focuses on th…
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

609 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question