Thread: Detecting two consecutive spaces in string

Define 'doesn't work'.

When I run the program and type in "Test Test" -- which has two whitespaces in the middle -- it ignores and goes to next function. What should happen is the loop catches that there is two consecutive whitespaces in the string and prompt the end user to re-enter data.

Oh, my mistake. If you need to prevent two spaces then -

Code:

cout << endl << endl << " Please enter a valid item name: ";
    getline(cin, itemName,'\n');		
	while (itemName.find("  ")!=itemName.npos)
	{
		cout << endl << endl << " Please enter a valid item name: ";
		getline(cin, itemName,'\n');			
	}

Thanks. I appreciate it.

Still having a problem with getline. I think it's because cin enters the fail state for some reason. Below is function and output. Any help would be greatly appreciated.

--------------------

Code:

 
 void PrintRecordName()
 {
  // Precondition:
  // Postcondition:
 
  string itemName;
 
   cout << endl << " You entered option 2" << endl << endl;
   system("pause");
   system("cls");
   cout << endl << " Note: You may have to hit enter twice " << endl;
   cout << endl << " Please enter item name: "; 
   getline(cin, itemName,'\n');
   
   while (itemName.find("  ") != itemName.npos)
   {
    cout << endl << endl << " Please enter a valid item name: ";
    getline(cin, itemName,'\n');   
   }
 
   cout << endl << endl << " You entered: " << itemName << endl << endl;
   system("pause");
   system("cls");
 
   //GetFile();
 
   //system("pause");
 
  return;
 } // ends PrintRecordName function

----------------------

Here's the output I get:

-----------------------

Note: You may have to hit enter twice

Please enter item name: testing testing

Please enter a valid item name: testing testing

You entered:

Press any key to continue . . .

---------------------

I don't understand why the while loop is breaking. The only thing I think of is that cin is in the fail state. I've tried cin.clear() before prompting in the while loop but this also doesn't work.

Out of answers

Well, I figured out what the problem is: there is a bug in the VC++ 6.0 version of the header files defining the getline function. Therefore, the code above should work, but it doesn't in Microsoft's VC++ 6.0.



Anybody know of an alternative method for reading a line of characters as a string. Maybe through a loop. I'll try and get back.