Octave bwlabel and imagesc in C++ API

[attudlb]

I am new to Octave C++ API. Trying use bwlabel and imagesc in C++.  My code
goes like the following:

#include<iostream>
#include&lt;octave/oct.h&gt;
#include&lt;octave/octave.h&gt;
#include&lt;octave/oct-rand.h&gt;

int main()
{

    Matrix A = octave_rand::matrix(10,10);
    std::cout << A;
    Matrix B =  mx_el_gt(A,0.39);
    std::cout << B;
    Matrix C = bwlabel(B,4);
    std::cout << C;
    imagesc(C);

}

I am unable to find how to use bwlabel and imagesc in Octave C++ API. Pls 
Help.

Thanks....
Attu D. L. B.

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