creating array with size determined by user input?

[Paul McKenzie]

This compiles correctly.

#include <vector>

using namespace std;

int main()
{
   int N = 10;
   int T = 40;
   vector< vector<float> >Temp(N, vector<float>(T));
    for (int i=0; i<N; i++)
        Temp[i][0]=5;

    for (int i=0; i<T; i++)
        Temp[0][i]=0;
}

Regards,

Paul McKenzie