// C includes
#include<unistd.h>
#include<stdio.h>
#include<errno.h>
#include<string.h>
#include<limits.h>

// C++ includes
#include<string>
#include<iostream>
using namespace std;

int main(){
	char buffer[HOST_NAME_MAX];
	int retval = gethostname(buffer, sizeof(buffer));
	string hn = buffer;
	printf("The host's name is %s\n", hn.c_str());
	printf("Return status %d\n", retval);
	if(retval){
		printf("errno = %d\n", errno);
		perror("gethostname");
	}
	strcpy((char*)hn.c_str(), "salmon");
	printf("hn = %s\n", hn.c_str());
	cout << "cout:  hn = " << hn << endl;
	printf("Length of hn:  %d\n", hn.length());

	return 0;
}