// fig13_11.cpp
// Standard library queue adaptor class template.
#include <iostream>
#include <queue> // queue adaptor definition

int main() {
   std::queue<double> values{}; // queue with doubles

   // push elements onto queue values
   values.push(3.2);
   values.push(9.8);
   values.push(5.4);

   std::cout << "Popping from values: ";

   // pop elements from queue
   while (!values.empty()) {
      std::cout << values.front() << ' '; // view front element
      values.pop(); // remove element                     
   }

   std::cout << "\n";
}



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