Simple LED blink in C++/C

Hi, guys am looking for a way to interface the nano onto a relay but on C++ environment. I’ve had a look at GitHub - jwatte/jetson-gpio-example: Simple example of memory-mapped NVIDIA Jetson GPIO access from user space C code but its a complicate. All i want is to raise a certain GPIO pin high in C++. Is there like a simple C++ program to make an LED blink if possible using the direct addressing