I see you've decided to ignore my advice about using a "proper"
parser ;-) That's OK, but you'll probably start to realise why they
are a good idea once you try and expand this to more functions (which
I presume you will eventually, since a 4-function calculator is not of
very great utility).
However, something else is a bit smelly about this code apart from the
assignment blooper.
what is OB? Is it 1, 2, 3 etc? Or is it 0.9999999999, 1.999999999....?
If the latter, what will "if (OB == 1)" produce - true or false? The
point is that floating point values have limited precision (after all,
you are trying to represent all possible numbers in just 32-bits -
they just don't all fit!).
Food for thought, I hope.
Graham
On 28 May 2008, at 7:31 am, Nathan wrote:
Third time...
On May 27, 2008, at 5:27 PM, Vincent E. wrote:
You need double equal signs in conditional statements, like:
- (IBAction)operators:(id)sender {
OB=[operatorBar floatValue];
if (OB==1) {
[operator setFloatValue: 4];
}
if (OB==2) {
[operator setFloatValue: 5];
}
}
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