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#include "fdinseek.h"
#include <string>
#include <iostream>
#include <istream>
#include <iomanip>
using namespace std;
int main()
{
IFdSeek fds(0);
istream is(&fds);
string s;
while (true)
{
if (!getline(is, s))
break;
streampos pos = is.tellg();
cout << setw(5) << pos << ": `" << s << "'\n";
if (!getline(is, s))
break;
streampos pos2 = is.tellg();
cout << setw(5) << pos2 << ": `" << s << "'\n";
if (!is.seekg(pos))
{
cout << "Seek failed\n";
break;
}
}
}
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