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// swapping ifstream objects
#include <iostream>     // std::cout
#include <fstream>      // std::ifstream
int main () {
  std::ifstream foo;
  std::ifstream bar ("test.txt");
  foo.swap(bar);
  char c = foo.get();
  while (foo.good()) {
    std::cout << c;
    c = foo.get();
  }
  foo.close();
  return 0;
}
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