built in queue c++
#include<iostream>
#include<queue>
using namespace std;
void showq(queue <int> gq)
{
queue <int> g = gq;
while (!g.empty())
{
cout << ' ' << g.front();
g.pop();
}
cout << '\n';
}
int main()
{
queue<int> gquiz;
gquiz.push(10);
gquiz.push(20);
gquiz.push(30);
cout << "Front Element: ";
cout << gquiz.front();
cout << "\nThe queue gquiz is:";
showq(gquiz);
}