Difficulty with CGPoint

Question

I'm a complete newbie here, so be gentle.
I'm writing a program that needs to determine the distance between a user's touch and a given target point. Simple geometry, right? I think the method definition should look something like:
float distance;
distance = sqrt ((touch.x - target.x) * (touch.x - target.x) + (touch.y - target.y) * (touch.y - target.y));
return distance;
Since I'll be getting touch.x and touch.y from a touch's locationInView, I'll be dealing with a CGPoint.
To make sure I was doing things correctly, I figured I'd start with a pre-defined CGPoint and replace it with the CGPoint from the touch once I got the bugs worked out.
So in my implementation I entered this line:
CGPoint foo = CGPointMake (200.0, 200.0);
But when I build the files, I get the error:
"error: initializer element is not constant"
I've been wracking my brain, digging through my references and documentation and I'm just beating my head against a wall here. Any assistance or suggestions will be greatly appreciated.

Answer 1

CGPoint foo = CGPointMake (200.0f, 200.0f);
maybe this works?