Problems with getch()

I'm having one problem with the getch() function. Let's say I do something like this..

Code:

short a = getch();    //need the value!
char* name;
cout << "Enter Name: ";
cin >> name;

The character that I press when getch() comes up will be put onto the screen when I go to input the name array. For example, let's say when getch() comes up, I press "a". Now the the next line would read this: Enter Name: a

is there a way to fix this? if you want to see exactly what i mean, download the file and run the .exe

if you want to see the source code, i'm using dev 4.9.4.1 But just open the .exe

I believe you want to know a way to pause the program. Here is one solution.

-----
// ignore 256 characters other than Enter
cin.ignore(256, '\n');

// ingore

cin.ignore();
-----

Test out cin.ignore.

Kuphryn

Oops.. that isn't for a pause in the program... I test a for what key the user pressed.

Use cin.ignore() to pause the program.

Kuphryn

I need the ASCII value of the key pressed by the user though- its just not for a pause.

Try this solution.

-----
std::getline(cin, 1);

// or this

TCHAR cOne;
std::cin.get(cOne);
-----

Kuphryn

he wasnt asking how to pause the proggy...

GrN, Ive had that problem for years and i havent yet figured out/seen a solution. My suggestion is not to mix calls between getch() and any other standard input functions because they all have that problem.

Originally posted by GrNxxDaY
I need the ASCII value of the key pressed by the user though- its just not for a pause.

Here, this program finds ASCII key codes for most keys...

Code:

#include <stdio.h>
#include <conio.h>

main()
{
	char c;
	
	printf("KEY\tCODE\n");

	while ((c = getch()) != 27)
	{
		printf("%3c\t%4d\n", c, (int)c);
		fflush(stdin);
	}
}

Good Luck

>fflush(stdin);
This is wrong, search the boards for the many times I've explained why.

-Prelude

Originally posted by Prelude
>fflush(stdin);
This is wrong, search the boards for the many times I've explained why.

-Prelude

It works fine with my compiler. It's not wrong.

Header File

stdio.h

Category

Input/output Routines

Syntax

#include <stdio.h>
int fflush(FILE *stream);

Description

Flushes a stream.

If the given stream has buffered output fflush writes the output for stream to the associated file.

The stream remains open after fflush has executed. fflush has no effect on an unbuffered stream.

Return Value

fflush returns 0 on success. It returns EOF if any errors were detected.

thanks clown

>It works fine with my compiler. It's not wrong.
Not the fflush(stdin) argument again?
http://www.eskimo.com/~scs/C-faq/q12.26.html
http://www.cprogramming.com/cboard/s...threadid=23237

>It works fine with my compiler. It's not wrong.
It may work for you, but that doesn't make it any less wrong. Unless you define the C++ language of course. Please see previous explanations of why, and instead of getting defensive maybe you should research what I say and try to prove me wrong. That would be more effective than the equivalent of saying "Is not!".

-Prelude

oh please... go home.. it's not wrong and borland is not idiotic
to include it if it is....
it is not ANSI standard, but it doesn't make it wrong...

If the given stream has buffered output fflush writes the output for stream to the associated file.

You flush an input stream, behaviour of your program is therefore completely undefined. It may work on your compiler and OS, it might reformat my disk on my compiler and OS. Something isn't right just because it works on your specific computer in your specific situation. If it doesn't work on all compilers that follow the standard, it's wrong.