Jon wrote:
> Like nobody has seen this program before...ha
>
> I have built a program that takes in an integer and lets the user
> know if it is prime or not. I wrote a bool function to handle to the
> calculation but could not get it to return anything but "true". When
> I changed to bool to a regular int isPrime program and passed an
> actual value, 0 or 1, is seemed to work. Is there something I am
> missing when I am returning a Boolean value? I placed both program
> below to see if I can get any input or pointers. I didn't have to
> use bool for the class, but I prefer to.
What compiler?
> bool isPrime(int number)
> {
>
> for( int i=2; i < number; i++)
> {
> int leftOver=(number % i);
>
> if (leftOver==0)
> {
> return true;
> break;
> }
>
> }
> return false;
> }
A few issues:
1) 2 is prime. Your code doesn't account for that.
2) Also, you only have to look at the first (int)sqrt(number) numbers.
3) The break; statement is not needed. Your compiler warnings should
be turned up high enough so that you get notified of such things.
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Thomas Hruska
CubicleSoft President
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