From:	karpfenteich AT gmx DOT de (Peter Karp)
Newsgroups:	comp.os.msdos.djgpp
Subject:	vector (STL) at() doesn't work in DJGPP?
Date:	Tue, 01 Feb 2000 16:34:59 GMT
Organization:	1&1 Telekommunikation GmbH
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi,

I'm still learning to use the containers and have some beginner's
questions regarding the <vector> of the STL.

Compiling...

int main()
{
vector<double> v;
cout << "Type in the first element of the vector: " << endl;
double x;
cin >> x;
v.push_back(x);
cout << " First element (index zero): " << v.at(0);
return 0;
}


...gives the following error message:

E:\aa\cpp>gxx kurz.cpp
kurz.cpp: In function `int main()':
kurz.cpp:30: no matching function for call to
`vector<double,allocator<double> >
::at (int)'

while the same program compiles (and runs) without a problem with
VC++6.

When I change v.at(0) to v[0] DJGPP doesn't have any problems either.
But I'd like to know why at() doesn't works (which would be better to
use sometimes as it checks if the range is valid) here.

Greetings from Cologne
Peter

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