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#include <iostream> #include <queue> using namespace std; int main() { queue<int> numbers; numbers.push(3); numbers.push(5); cout << numbers.front() << endl; //3 cout << numbers.front() << endl; //3 numbers.pop(); cout << numbers.front() << endl; //5 numbers.pop(); numbers.push(10); numbers.push(30); cout << numbers.front() << endl; //10 cout << numbers.size() << endl; //2 return 0; }
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