network.c

实战Linux socket编程例题源代码

/* network.c:
 * 
 * Example using inet_network(3) :
 */
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

int
main(int argc,char **argv) {
    int x;
    const char *addr[] = {
        "44.135.86.12",
        "127.0.0.1",
        "172.16.23.95",
        "192.168.9.1"
    };
    unsigned long net_addr;

    for ( x=0; x<4; ++x ) {
        net_addr = inet_network(addr[x]);
        printf("%14s = 0x%08lX net 0x%08lX\n",
            addr[x],net_addr,
            (unsigned long)htonl(net_addr));
    }

    return 0;
}