// Ivan Novick
// August 10, 2009
// demonstrate GNU libc function for finding the hostname of the local host

#include <stdio.h>

#define BUF_SIZE 256

int main(int argc, char** argv){

    char buffer[BUF_SIZE];
    if (gethostname(buffer, BUF_SIZE)){
        fprintf(stderr, "error retrieving local hostname\n");
        return 1;
    }

    // it is possible the hostname was truncated and not null-terminated
    buffer[BUF_SIZE-1] = 0;

    // print the result
    fprintf(stdout, "%s\n", buffer);
    
    return 0;
}