Solved

retrieving a single character in VC++

Posted on 2000-03-25
2
185 Views
Last Modified: 2010-04-02
I'm presently using MS Visual C++ 6 and I would like to know the best way to input a single character (with no need for the user to press enter).  I've tried using the _getch, which works, but it does not display my prompt until after the _getch function is executed(the program sits there with a blank screen waiting for input).

Then if I ask the user for more input the inputted character is echoed after the prompt.

eg:
cout<<"Enter a character: ";
ch = _getch();
cout<<ch<<endl;
cout<<"Enter an integer: ";
cin>>x;

upon execution:
(screen is blank at this point waiting for input even though the prompt should be there....so I press a character then the following is displayed)
Enter a character: g

Enter an integer: g


I understand it's a stream related problem, but I have no idea what's going on in the streams.

Thanks in advance,

G
0
Comment
Question by:h_j_s
[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 5

Expert Comment

by:pitonyak
ID: 2666573
The problem is buffered IO. flush the buffer... with no docs I can but guess, but I think that you need to do

cout << "text: ";
cout.flush();

when you perform

cout << endl;

This also causes a flush to happen but not what you desire...

andy
0
 
LVL 1

Accepted Solution

by:
jbodom earned 50 total points
ID: 2692443
Use printf() and getche() like:

char ch;
printf("Enter a character: ");
ch=getche();

getche() echoes the character to the screen without having to press return.



0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

This article will show you some of the more useful Standard Template Library (STL) algorithms through the use of working examples.  You will learn about how these algorithms fit into the STL architecture, how they work with STL containers, and why t…
Introduction This article is a continuation of the C/C++ Visual Studio Express debugger series. Part 1 provided a quick start guide in using the debugger. Part 2 focused on additional topics in breakpoints. As your assignments become a little more …
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
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.

740 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