Thread: Having problem with loop!!

I am trying to make an easy program but I have it done except it prints off extra data.

Code:

while (cin) {
      cout << "Enter an even number: "; 
       cin >> num; 
  if (num % 2 == 0 && num >= 0) 
     cout << "The number " << num 
           << " is a positive even number." << endl; 
                                                     
    else  
     cout << "The number " << num 
          << " is not a positive even number!" << endl; 
          
     } // end while

But when i print it looks like this:

Code:

Enter an even number: 23
The number 23 is not a positive even number!
Enter an even number: -6
The number -6 is not a positive even number!
Enter an even number: 4
The number 4 is a positive even number.
Enter an even number:

As you can see, I only put in 3 numbers but 4 things pop up. How can I prevent this? I am sorry that I am fairly new to this.

Code:

while (cin) {
      cout << "Enter an even number: "; 
       cin >> num; 
  if (num % 2 == 0 && num >= 0) 
  {
     cout << "The number " << num 
           << " is a positive even number." << endl; 
     break;
  }                                                     
    else  
     cout << "The number " << num 
          << " is not a positive even number!" << endl; 
          
     } // end while