I know this is probably a really easy question, but my teacher failed to mention how to do it, so here goes.

I'm making a simple program that tells a user if a sequence of given numbers are even or odd. Here's what the program should look like:

``````Enter a sequence of numbers (0 to quit): 12 4 19 3 0

12 is even
4 is even
19 is odd
3 is odd``````

I've gotten the program made, except my output stops at "12 is even".
My question is, how do I get my program to loop through all of the numbers and stop at 0?
I tried using a while loop,

``while (x != 0)``

But, it just looped "12 is even" over and over.

## All 5 Replies

Post the rest of the code. That seems like it should be working to me.

Here's my code.

``````int main ()
{
int input;
cout <<"Enter a sequence of numbers (0 to quit): ";
cin >> x;

if (x != 0)
{
if (x % 2 == 0)
{
cout << x << " is even" << endl;
}
else if (x % 2 != 0)
{
cout << x << " isn't even" << endl;

}
}
}``````

Ok your code has a few problems with it. First put this at the top of the code

``````#include <iostream>
using namespace std;``````

Next change you variable input to x. This is the variable that will be entered by the user and tested by the if statement.
Next xhange the first if to a while loop and move cin>>x into the while loop.
Then use your current if/else to test the input.
Finally put return 0; before the final right brace }
Your main problem was leaving cin>>x outside of the while loop. You need it in the loop so you can enter many numbers.

commented: You're awesome, thanks! +1

Here's my code.

``````int main ()
{
int input;
cout <<"Enter a sequence of numbers (0 to quit): ";
cin >> x;

if (x != 0)
{
if (x % 2 == 0)
{
cout << x << " is even" << endl;
}
else if (x % 2 != 0)
{
cout << x << " isn't even" << endl;

}
}
}``````

1) change : int input; TO int x;
2) Wrap your code in a do while loop.

``````int x = -1;
do
{
/* get user input and check for even/oddity */
}while(x != 0) //quits if user enters 0``````
commented: You rule! Thank you so much! +1

Thank you very much! The Do...While loop worked like a charm.

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