Question

I’m making a texture classifier in OpenCV and VS2008 and I want to insert 3 double variables into a double array so I can calculate nearest neighbours of the arrays.

I tried :

double a[5]={x,y,z};

and the output is 0012FF04

the same output happens when I just declare an array with a couple of numbers in it like
double:
b[2]={1.0,2.3};

And finally when I tried to declare the array long double it went into debug and gave me an exception and the console output was: 0012FED4OpenCV Error:Bad flag <parameter or structure field> <Unrecognized or unsupported array type> in unknown function, file .\cxarray.cpp, line 2470.

If anyone could help me I would be very grateful.

Answer 1

C++ doesn’t define an operator<<(double*) that displays the contents of an array; C++ arrays aren’t self-describing and I don’t believe defining such an operator in a generally-useful way would be possible. You have to write an explicit loop:

for (int i=0; i<3; ++i)
    std::cout << brick_v[i] << " ";
std::cout << std::endl;