Can someone explain this

So im doing Socket programing in C using winsoc2 and im donw with my server-socket now im programing my client-socket but i dont get this :

\#define DEFAULT_PORT "27015"



// Resolve the server address and port

iResult = getaddrinfo(argv[1\], DEFAULT_PORT, &hints, &result);

if (iResult != 0) {

printf("getaddrinfo failed: %d\\n", iResult);

WSACleanup();

return 1;

}

https://redd.it/1nx5arl
@r_cpp