linux编程,知道ip和子网掩码怎么求网络地址

在Linux上执行以下步骤： # include stdio.h # include stdlib.hint main () file * netinfo=popen ((/sbin/ifconfig )，' r ' )； if (！ netinfo ) {puts(errorwhileopenpipe )； exit(1； } char str[200]； wile(fgets(str，199，netinfo )！=NULL ) {printf('%s '，str )； }pclose(Netinfo )； }htdhb [root@localhost ~]# ./testeth0link encap :以太网hwaddr 0033600 c 33602933604:6 FB :6 d inetaddr 3360192.168.232.128 bcast 3360192.168.255 0c:29ff:Fe44:FB6d/64 scope : linkupbroadcastrunningmulticastmtu :1500 metric 33601 rx packets 33600 dropped :0 over runs 33600 fram mer 00 dropped :0 over runs :0电信公司：0 collisions 33600 txqueuelen 33601000 rx bytes 33607666 (7.4 kib tx bytes :6087 (5.9 kib ) interrupt :18 base address :0 x 2024 lolinkencap : localloopbackinetaddr 3360127.0.0.0.1 mask 33:255.0.0.0.0.0 inet6addet 6 tu :16436 metric :1 rx packets :1706 errors 33600 dropped :0 over runs 33600 frame 336000 3606 errors :0 droped :0 over olli sions :0 txqueuelen :0 rx bytes 33602640180 (2.5 MIB ) txbbb