网络编程实验二

Part 1: 实验目的掌握sockaddr_in 应用的三个步骤，并能熟练运用过程中相关函数。

Part2：实验内容

 1  1 #include<stdio.h>
 2  2 #include<stdlib.h>
 3  3 #include<string.h>
 4  4 #include<unistd.h>
 5  5 #include<sys/types.h>
 6  6 #include<sys/socket.h>
 7  7 #include<netinet/in.h>
 8  8 #include<arpa/inet.h>
 9  9 #define PORT 1234
10 10 main()
11 11 {
12 12     int i;
13 13     struct sockaddr_in server;
14 14     bzero(&server,sizeof(server));
15 15     printf("Your server‘s ip init mem is \n");
16 16     for(i=0;i<sizeof(server);i++)
17 17     {
18 18         printf(" %02x ",*((unsigned char*)(&server)+i));
19 19     }
20 20     printf("\n");
21 21     printf("\n");
22 22     server.sin_family=AF_INET;
23 23     server.sin_port=htons(PORT);
24 24     server.sin_addr.s_addr=inet_addr("192.168.0.21");
25 25     printf("Your server‘s ip sin_family is %d\n",server.sin_family);
26 26     printf("Your server‘s ip is %s, port is %d\n",inet_ntoa(server.sin_addr),ntohs(server.sin_port));
27 27     printf("Your server‘s length is %d\n",sizeof(server));
28 28     printf("Your server‘s ip mem is \n");
29 29     for(i=0;i<sizeof(server);i++)
30 30     {
31 31         printf(" %02x ",*((unsigned char*)(&server)+i));
32 32     }
33 33     printf("\n");
34 34     return;
35 35 }