User Input Data - GameCreators Forum

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Red Eye

15

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Joined: 15th Oct 2008

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Posted: 2nd Aug 2009 00:16

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Hey,

I searched and learned about iostream and cin and cout simple commands. And learned how to make more little advanced stuff.
But iostream cant be included. In my projects.

Like this:

+ Code Snippet

#include <iostream>
using namespace std;

int main ()
{
  int i;
  cout << "Please enter an integer value: ";
  cin >> i;
  cout << "The value you entered is " << i;
  cout << " and its double is " << i*2 << ".\n";
  return 0;
}

And is there another way to do it in DarkGDK?

Thanks,

Red Eye

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Drowneath

15

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Joined: 22nd Jun 2009

Location: In your eyes

Posted: 2nd Aug 2009 05:29 Edited at: 2nd Aug 2009 05:32

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Maybe something like...

+ Code Snippet

//...
std::string uinput;
while(LoopGDK())
{
  //..
  std::string uchar(dbInKey());
  uinput.append(uchar);
  //..later filtering
  dbText(10, 10, (char*)uinput.c_str());
  //...
}

But you'll need to filter the input manually, also implement the backspace.

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Red Eye

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Posted: 2nd Aug 2009 21:54

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Thank you a bunch. Gonna experiment with that.

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MFC Coder

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Joined: 5th Mar 2009

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Posted: 3rd Aug 2009 09:13

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I just started with the DarkGDK and came up with this:

+ Code Snippet

	char *szInput;
	int nInput;
	
	dbPrintC("Please enter an integer value: ");
	szInput = dbInput();
	nInput = dbVal(szInput);
	dbPrintC("The number you entered is: ");
	dbPrint(static_cast<double>(nInput));
	dbWaitKey();

Here, instead of going for a direct C++ approach I tried to do a direct DBPro conversion as best I could.

This code compiles and runs fine, although I could be way off in my approach as I a just beginning.

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DnB

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Joined: 28th Feb 2009

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Posted: 10th Aug 2009 14:52

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Ah, yes! Excellent MFC Coder! That works nicely. I missed the dbVal command and I was trying to do it on my own, and thats what I needed. Although in my case I didn't need to static cast it afterwords.

And If I want to print the value back out to the screen (ill just use the same variable nInput) I use

+ Code Snippet

dbText(50,0, dbStr(nInput));

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Bran flakes91093

16

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Joined: 13th Sep 2008

Location: Crazy Land

Posted: 10th Aug 2009 17:44

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@DnB

That will cause memory leaks, since dbStr() dynamically allocates more memory each time it is called, and you are not deleting it properly.

This is how you properly use it:

+ Code Snippet

char* val = dbStr(nInput);
dbText(50, 0, val);
delete[] val;

Or you can use sprintf, which I think is the safest and easiest way.

+ Code Snippet

char buffer[128];
sprintf(buffer, "nInput is %d", nInput);
dbText(50, 0, buffer);

http://www.cplusplus.com/reference/clibrary/cstdio/sprintf/

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