Re: RedHat 8.0 `istream_iterator' undeclared (first use this function)

MR <nimrod.bm@xxxxxxxxxxxxxxx> writes:

> Hello STL gurus, 
> 
> 
> I have a bit of a problem getting my iterators to work with libstdc++
> 3.2-7 (redhat 8.0), GCC 3.2.
> 
> with a very simple program (merges two files):
> 
> #include <iostream>
> #include <fstream>
> #include <algorithm>

#include <iterator>

Stream iterators are in this header. See the <iterator> synopsis in
    24.2, or 24.5 .

> 
> using namespace std;
> 
> main(int argc, char**argv) {

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

>     if (argc < 3) {
> 
>       cout << "You must supply two input files.\n";
> 
>       exit(1);
>     }
> 
>     ifstream in1(argv[1]), in2(argv[2]);
>     if(!in1||!in2) {
>       cout << "File open error\n";
>       exit(1);
>     }
> 
>     merge(
>       istream_iterator<float>(in1),
>       istream_iterator<float>(),
>       istream_iterator<float>(in2),
>       istream_iterator<float>(),
>       ostream_iterator<float>(cout, "\n")
>     );
>     return 0;
> }