im not sure what im doing wrong

[techdrag0n]

I'm trying to get a sample working, Im using VS2019, Cuda 11.4,windows 10,
I created a new google test project
added cuda 11.4 build dependancy
added the include folders to C++ general
copied the code from samle_01_add/add.cu into test.cpp
still had a lot of errors showing
added

#include "device_launch_parameters.h"
#include <cuda_runtime_api.h>

just before #include <cuda.h>
all errors seem to be gone except one.
kernel_add << <(INSTANCES + 3) / 4, 128 >> > (report, gpuInstances, INSTANCES);
the single < is underlined and says expected an expression.

any suggestions are welcome, thank you

[techdrag0n]

Is it an incompatibly problem or am I missing something?