?? 15.7.c
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#include <stdio.h>#include <netdb.h> int main(){ struct servent *ser; if( ser=getservbyname("ftp","tcp")) { printf("name : %s\n",ser->s_name); printf("port : %d ",ntohs(ser->s_port)); printf("protocol:%s\n",ser->s_proto); printf("alias: %s\n",ser->s_aliases[0]); } else { printf("there is no such a service.\n"); } if( ser=getservbyname("http","tcp")) { printf("name : %s\n",ser->s_name); printf("port : %d ",ntohs(ser->s_port)); printf("protocol:%s\n",ser->s_proto); printf("alias: %s\n",ser->s_aliases[0]); } else { printf("there is no such a service.\n"); } if( ser=getservbyname("asdasd","tcp")) { printf("name : %s\n",ser->s_name); printf("port : %d ",ntohs(ser->s_port)); printf("protocol:%s\n",ser->s_proto); printf("alias: %s\n",ser->s_aliases[0]); } else { printf("there is no such a service.\n"); } }?? 快捷鍵說明
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