Printing out the element values in a mxDouble array (C++ script in Matab)

Hi,

I am using Matlab 2017b and am having trouble printing out the values stored in a mxDouble array.

I have written a mexFunction in a C++ script that takes in a 2-d array as input. Using mxGetPr, I create a pointer of type double * to this array. Let's call this pointer "x."

I try to print out the first element of the array, using the following code:

mexPrintf("x value is%d\n",*x);

However, it appears that the integer printed is address of the value pointed to by x, not the value itself.

How do I print out the value pointed to instead of the address?

Thanks!

Answer 1

[James Tursa]

%d is a decimal integer format for use with short, int, long, etc. This doesn't work with floating point. Try e.g. %f or %g instead.