1)Where can I download the sdk including the lib files(btc_dprx_syslib.lib,btc_dptx_syslib.lib,*.h,etc)
2)Are there any demo with C or C++ source code?
Could someone please help with this, Thanks in advance!!!
It is Intel® Quartus® Prime Software.
You can get download it from here.
Probably you need a license to use it. Please contact Intel FPGA distributor to get the license.