On Thu, Mar 6, 2008 at 10:52 AM, Robert Ryan <[EMAIL PROTECTED]> wrote:
> what does it mean: error undeclared
> thanks
>
> #include <iostream>
> using namespace std;
> int main()
> {
> cout << "Please enter an integer in the range 1 to 10
> (inclusive):\n";
> int n = 0;
> while (n==0) {
> cin >> n;
> if (cin) { // we got an integer; now check it:
> if (1<=n && n<=10) break;
> cout << "Sorry, " << n
> << " is not in the [1:10] range; please try
> again\n";
> }
> }
>
> if (cin.fail()) { // we found something that wasn.t an integer
> cin.clear(); // we.d like to look at the characters
> cout << "Sorry, that was not a number; please try again\n";
> char ch;
> while (cin>>ch && !isdigit(ch)) { // throw away non-digits
> // we didn.t find a digit: give up
> if (!cin) error("no input");
> // put the digit back, so that we can read the number
> cin.unget();
> }
> }
>
>
> .cpp: In function `int main()':
> .cpp:22: `error' undeclared (first use this function)
> .cpp:22: (Each undeclared identifier is reported only once for each
> function it appears in.)
You don't have error() declared anywhere, but you use it on line 22.
Are you missing a header?
-- Brett
------------------------------------------------------------
"In the rhythm of music a secret is hidden;
If I were to divulge it, it would overturn the world."
-- Jelaleddin Rumi
