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Urgent help needed please

Elfman

Hi i hope some can help me

i need to out put a varible in a message box so i can see where the value is being corrupted it's a char[15] ,

i'm using visual c++ 6.0

thanks

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Evil Phil

   MessageBox(&my_char, "Corrupt?", MB_ICONQUESTION | MB_OK);

Something like that perhaps. I could be wrong as I don't know C++. Although I suspect the char[15] is actually an array so you'll have to loop through each element, heh.

DeadBankClerk

Elfman wrote:

Hi i hope some can help me

i need to out put a varible in a message box so i can see where the value is being corrupted it's a char[15] ,

i'm using visual c++ 6.0

thanks

You could use the debugger...
And set a breakpoint on the variable set to trigger when the memory is written to.

daymobrew

While the debugger is the best option, the code for putting in a message box is:

char my_char[15];

/* code to initialise and corrupt my_char goes here */

/* Remove the & from earlier suggestion. */
MessageBox(my_char, "Corrupt?", MB_ICONQUESTION | MB_OK);

Evil Phil

Soz, I thought LPCTSTR meant it required a pointer. My bad.

rsynnott

Evil Phil wrote:

Soz, I thought LPCTSTR meant it required a pointer. My bad.

It does. Where you have char test[20];, test IS a pointer, to that array.

MickFarr

Here ya go,

//////////////////////////////////////////////////////////////////////////////
// FUNCTION : DisplayChars		                                    //
// PURPOSE  :                                                               //
//////////////////////////////////////////////////////////////////////////////
void CClassName::DisplayChars() 
{
   char buff[128];
   char MyChar[] = "How much wood could a would chuck chuck if a wood chuck could chuck chukwa";

   // Display messagebox for char[15]
   wsprintf(buff, "char 15 = %c", MyChar[15]);
   MessageBox(buff, "Character Number 15", MB_OK);

   // Or you can Loop through all the characters
   for(int i=0;  i < strlen(MyChar); i++)
   {
      wsprintf(buff, "char pos %d = %c\\nPress yes to continue", i, MyChar[i]);
      if(MessageBox(buff, "Character Loop", MB_ICONQUESTION | MB_YESNO) == IDNO)
         break;
   }
	
}