Queue Operations In STL

CPP/stl/Queue & Operations.cpp

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+#include<iostream>
+#include<bits/stdc++.h>
+using namespace std;
+
+int main()
+{
+queue<int>q;
+q.push(4);
+q.push(5);
+q.push(6);
+q.push(7);
+
+//remove 1st element from front
+q.pop();
+
+//show the front or 1st element
+cout<<q.front()<<endl;
+
+//show the last element
+cout<<q.back()<<endl;
+
+//diplay the size of array
+cout<<q.size()<<endl;
+
+//checking if queue is empty or not
+if (q.empty())
+{
+cout<<"Yes Empty"<<endl;
+}
+else
+{
+cout<<"No Not Empty"<<endl;
+}
+
+return 0;
+}