Re: std::vector: reserve required?
On Jul 4, 7:44 am, Dar=EDo Griffo <dario.griffo.lis...@gmail.com> wrote:
Mike -- Email Ignored wrote:
In std::vector, is reserve or resize required?
On:
Linux mbrc32 2.6.22.1-41.fc7 #1 SMP Fri
Jul 27 18:10:34 EDT 2007 i686 athlon
i386 GNU/Linux
Using:
g++ (GCC) 4.1.2 20070502 (Red Hat 4.1.2-12)
The program below fails, but if the reserve(en)
is uncommented, it works. Is this as expected?
// vectst.cc 07/04/08
#include <iostream>
#include <vector>
using namespace std;
int main(int argc, const char* argv[])
{
int en = 10;
vector<int> vec;
// vec.reserve(en);
for (int jj = 0; jj < en; ++jj)
vec[jj] = jj;
for (int jj = 0; jj < en; ++jj)
cout << vec[jj] << endl;
exit (0);
}
Thanks,
Mike.
No, you could do that (use reserve), or, use push_back()
reserve() does not make the vector larger. You must have meant "you
could use resize or push_back."
Ali
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