Thread: Matrices set precision

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?

Code:

#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 << setprecision(3) << C << endl;
    cout << endl;
    cout << "Matrix B" << endl;
    cout << setprecision(3) << B << endl;
    cout << endl;
    cout << "Matrix (CB)(C transpose)" << endl;
    cout << setprecision(3) << (C*B)*~C << endl;


    return 0;
}