test2.c

培训嵌入式linux

#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>

int main(int argc, char **argv)
{
  if (argc < 2)
  {
    fprintf(stdout, "Usage: %s <value>\n", argv[0]);
    exit(1);
  }

  int value = atoi(argv[1]);

  fprintf(stdout, "htonl(0x%x) = 0x%x\n", value, htonl(value));
  fprintf(stdout, "ntohl(0x%x) = 0x%x\n", htonl(value), ntohl(htonl(value)));

#if 0
  fprintf(stdout, "htons(0x%x) = 0x%x\n", value, htons(value));
  fprintf(stdout, "ntohs(0x%x) = 0x%x\n", value, ntohs(value));
#endif

  return 0;
}