passing IP Address as a parameter

[[email protected]]

Hi,
I am trying to pass the IP Address as a parameter instead of hard coding it, but I am ending with no connection.

The code is as follows:

char server_ip_address[16]; //globally declared

void put_address(char *ip_addr)
{
struct sockaddr_in ServAddr;
ServAddr.sin_addr.s_addr = inet_addr(ip_addr);
}

/*calling the put_address function */
udp_connect()
{
ServAddr.sin_family = AF_INET;
ServAddr.sin_len = sizeof(ServAddr);
put_address(&server_ip_address);
ServAddr.sin_port = 5060;
}

/*initializing the server_ip_address with IP Address in the main function*/
main()
{
scanf("%s", server_ip_address);
}

Any idea where I am making a mistake in my routine.

Thanks