Runtime error GDALWarp command in C++ programme

I am trying to use GDALWarp in VS2019: A snapshot of the code is

#include <gdal_utils.h>
#include <gda_priv.h>
#include <cpl_string.h>

int main()  { GDALDataSetH* Dataset=GDALOpen(); char ** argv= NULL;
argv = CSLAddString(argv,"-r"); argv = CSLAddString(argv,
"cubicspline"); //I have added more options ...

GDALWarp("output.tif",NULL,1,Dataset,opt,NULL);

}

I am getting an error on the GDALWarp command, the error states that "exception thrown at (gdal301.dll) in GDALWarp". The programme builds correctly.

Can you help me fix this?