/* A program that prints the Frobenius product of two matrices A and B:  i.e. trace of the matrix A*transpose(B).
   
*/
#include <iostream>
using namespace std;


double Frob_product( double A[2][2], double B[2][2] ) 
   {
    
   double frob_product = 1.0;


   return frob_product ;
 }//end of the Frobenius product function.
int main() {
    double A[2][2] ={ {1,2},{3,4} } ;
    double B[2][2] ={ {2,3},{-1,4} } ;
    cout<< "F product = "<<Frob_product(A,B)<< endl;
    return 0;
}