No subject

Tue Nov 24 12:54:00 GMT 1998

/* I tried replying directly, but the mail bounced */
> vector<vector<int> > mymatrix(n);
> for (int i = 0;i < n;i++)
> for (int j = 0;j < n;j++)
> mymatrix[i][j] = 0;

What you have there should not work. Take a look at the default constructor
and operator[] for vector<int>.
vector() : start(0), finish(0), end_of_storage(0) {}
reference operator[](size_type n) { return *(begin() + n); }
iterator begin() { return start; }
Your instantiation of of mymatrix will create n 0-element vectors with start
ptrs set to null. This is why the deref is failing. Here's a fix.
 for (int i = 0;i < n;i++){
 mymatrix[i].resize(n);
 for (int j = 0;j < n;j++)
 mymatrix[i][j] = 0;
 }
-- 
John F. Kolen				voice: (850)474-3075 
Assistant Professor			fax: (850)474-3023
Dept. of Computer Science
University of West Florida
Pensacola, FL 32514
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