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| 21.2.3.A queue for strings: push, empty, front, pop |
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#include <iostream>
#include <string>
#include <queue>
#include <stack>
using namespace std;
int main()
{
queue<string> q;
cout << "Pushing one two three four\n";
q.push("one");
q.push("two");
q.push("three");
q.push("four");
cout << "Now, retrieve those values in FIFO order.\n";
while(!q.empty()) {
cout << "Popping ";
cout << q.front() << "\n";
q.pop();
}
cout << endl;
return 0;
}
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