C language Ftp sending in windows

#include "my_sock.h"

#define N_COMMANDS      6       //number of commands
#define PORT            21      //ermduh
#define SALEN           16      //sockaddr_in size
#define TIMEOUT         10      //listening TO

char    *command[] =    //these are the commands we send to ftp server
{
        "USER anonymous\r\n",
        "PASS asdf@aol.com\r\n",
        "SYST\r\n",
        "TYPE I\r\n",
        "PASV\r\n",
        "STOR fale\r\n"
};

int
main(int argc, char **argv)
{
        if(argc != 2) printf("Usage: %s <ip>\n", argv[0]),      exit(1);

        int     sock = 0,       nread = 0,      x = 0,  in_sz[N_COMMANDS];
        char    buf[ETH_FRAME_LEN];
        struct sockaddr_in      sa;
        struct timeval  ts;

        bzero(&sa, SALEN),      bzero(buf, ETH_FRAME_LEN),      bzero(&ts, sizeof(struct timeval));

        //setup address structure
        sa.sin_family = AF_INET;
        sa.sin_port = htons(PORT);
        sa.sin_addr.s_addr = inet_addr(argv[1]);

        ts.tv_sec = TIMEOUT;    //socket timeout

        //get the size of each command w/o NULL terminator and reset x
        for(x; x < N_COMMANDS; x++)
                in_sz[x] = strlen(command[x]);
        x = 0;

        printf(".-~'`ftp_find`'~-.\n"); //hi
        //create socket
        if( (sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
                perror("sock"), exit(0);

        //set timeout option
        if( (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &ts, sizeof(ts))) != 0)
                perror("setsockopt"),   exit(0);

        //open named pipe for reading and wait for input from other process
        //only wait for 1 hour at max then save and shutdown

        //connect to server
        if( (connect(sock, (struct sockaddr *)&sa, SALEN)) < 0)
                perror("con"), exit(0);
        else
                printf("connected to %s...\n", argv[1]);

        while(x <= N_COMMANDS)  //loop one extra time to read last reply
        {
                sleep(1);       //let the server breathe

                if(x < N_COMMANDS)      //skip sending in final loop
                {
                        if( (nread = write(sock, command[x], in_sz[x])) < 1)
                                perror("write"),        exit(0);

                        printf("sending command:%s", command[x]);
                }

                //a timeout indicates success if all commands have been sent,,,, USUALLY
                if( (nread = recv(sock, buf, ETH_FRAME_LEN, 0)) < 1)
                {
                        if(errno == EAGAIN)     //usually on success we timeout waiting for response
                                goto end;
                        else
                                perror("read"), exit(0);
                }

                //if a command isnt accepted/fails then the response code starts with a 4 or 5 like HTTP
                if( (buf[0] == '4') || (buf[0] == '5'))
                        printf("\ncommand rejected, moving on to next target\n"), exit(0);
                else
                        printf("...\n");
                x++;
        }

        //status and cleanup
end:
        if(x == N_COMMANDS)
                printf("Success, logging %s as pub\n", argv[1]);
        else
                printf("Failure\n");

        exit(1);
}