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iterator problem

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Join Date: Feb 2008

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daviddoria daviddoria is offline

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iterator problem

Jan 21st, 2009

I would expect this to ouput the 5 doubles, but instead I get the output below.

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vector<double> a(5);
	a.push_back(1.2);
	a.push_back(1.3);
	a.push_back(1.4);
	a.push_back(1.5);
	a.push_back(1.6);
 
    vector<double>::iterator i;
 
    i = a.begin();
 
    while( i != a.end() )
	{
		cout << *i << endl;
		i++;
	}
vector<double> a(5);
	a.push_back(1.2);
	a.push_back(1.3);
	a.push_back(1.4);
	a.push_back(1.5);
	a.push_back(1.6);

    vector<double>::iterator i;
 
    i = a.begin();

    while( i != a.end() )
	{
		cout << *i << endl;
		i++;
	}

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0
0
0
0
0
1.2
1.3
1.4
1.5
1.6
0
0
0
0
0
1.2
1.3
1.4
1.5
1.6

Any ideas why?

Thanks,

Dave

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Ancient Dragon Ancient Dragon is offline

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Re: iterator problem

Jan 21st, 2009

>>vector<double> a(5);
That creates an array of 5 doubles.

>> a.push_back(1.2);
That adds an additional element to the array, so after this line executes the array will have 6 elements.

Don't PM me with questions -- you might get a nasty PM in response. If you have a question then post it in one of the forums.

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Join Date: Feb 2008

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Reputation: daviddoria is a jewel in the rough

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daviddoria daviddoria is offline

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Re: iterator problem

Jan 21st, 2009

oh hahahahaha geez I thought it was something to do with the iterator.. but it's just PEBCAK (isn't that the acronym? problem exists between chair and keyboard?) haha