No subject

Tue Nov 24 16:45:00 GMT 1998

Hi Ugo,
Ugo Matrangolo wrote:
> This program causes a segment violation :
> ...
> vector<vector<int> > mymatrix(n);
>> for (int i = 0;i < n;i++)
> for (int j = 0;j < n;j++)
> mymatrix[i][j] = 0;
> ...
> Can anyone tell me if it is a bug or my fault ?

Your fault ;-)
The declaration allocates a vector of n *empty* vector<int>s and those
inner vectors are never expanded to make room for any elements (vectors
do not expand automatically). Try this one instead:
 vector<vector<int> > mymatrix(n);
 for (int i = 0;i < n;i++)
 for (int j = 0;j < n;j++)
 mymatrix[i].push_back(0); // expand the vector<int> by one
so long, benny 
======================================
Benjamin Riefenstahl (benny@crocodial.de)
Crocodial Communications EntwicklungsGmbH
Ruhrstr. 61, D-22761 Hamburg, Germany
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