byteorder.cc

达内IT培训Unix C++第一天源码（共四天） 是入门Unix 下C++编程的好东西

#include <iostream>
using namespace std;
#include <netinet/in.h>

void showbytes(void* addr, int size)
{
	unsigned char* p=(unsigned char*)addr;
	for(int i=0; i<size; i++)
		cout << hex << (int)*p++ << ' ';
	cout << endl;
}
int main()
{
	int n=0x1;
	showbytes(&n, sizeof(n));
	n = htonl(n);
	showbytes(&n, sizeof(n));
	cout << "n=" << n << endl;
	n = ntohl(n);
	cout << "n=" << n << endl;
}