do something when counter = x

I have a counter that make counter++ every time one image touches anothe开发者_开发百科r image.

Now what I want to do is: if counter=2; do something, but I always get an error:

Assignment makes pointer from integer without a cast

Here is a part of the code:

-(void)checkcollision {
    if(CGRectIntersectsRect(flakeImage.frame, viewToRotate.frame)) {
       counter++;
    }
}

-(void)checknumber {
    if(counter=2) {
        viewToRotate.alpha=0;
    }
}

Are you perhaps doing this:

if (counter = 2) {
    // Do something.
}

This is a common error in if statements. The correction would be:

if (counter == 2) {    // Note the "==", instead of "="
    // Do something.
}

This is just a guess though - I would need to see some more information about the error, or about what you want to do.

EDIT

Ah - have seen your newly posted code, confirming what I stated above. Your code reads that you are trying to assign the value '2' to counter in the if statement. You want the == to make this a check for equality.