Matrices set precision

[allensark]

I wrote a code to perform a matrix operation but I need to set the precision to 3 decimal places for the results. I'm having trouble doing so because I'm not getting any different from if the set precision commands were not there. Any help?

#include <cstdlib>
#include <iostream>
#include <cmatrix>
#include <iomanip>

using namespace std;
typedef techsoft::matrix<int> iMatrix;

int main()
{
     //Set Precision
    cout.setf(ios::fixed);
    cout.precision(3);

    //Declare Matrices
    int Bdata []={-2, 2,-1,5}, Cdata []={3, 2, -1, -2, 0, 2};
    iMatrix B(2,2,Bdata);
    iMatrix C(3,2,Cdata);

    //Display
    cout << "This program uses a matrix class from Techsoft." << endl;
    cout << endl;
    cout << "Matrix C" << endl;
    cout << setw(2) << C << endl;
    cout << endl;
    cout << "Matrix B" << endl;
    cout << B << endl;
    cout << endl;
    cout << "Matrix (CB)(C transpose)" << endl;
    cout << setw(3) << (C*B)*~C << endl;

    return 0;
}