What is the output of this program?#include <iostream> #include <queue> using namespace std; int main () { queue<int> QueueData; QueueData.push(15); QueueData.push(45); QueueData.back() -= QueueData.front(); cout << QueueData.back() << endl; return 0; }

What is the output of this program?#include <iostream> #include <queue

1.	What is the output of this program? #include <iostream> #include <queue> using namespace std; int main () { queue<int> QueueData; QueueData.push(15); QueueData.push(45); QueueData.back() -= QueueData.front(); cout << QueueData.back() << endl; return 0; }
A.	15
B.	45
C.	30
D.	Compilation Error
E.	None of these
Answer» D. Compilation Error

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What is the output of this program?#include <iostream> #include <queue> using namespace std; int main () { queue<int> QueueData; QueueData.push(15); QueueData.push(45); QueueData.back() -= QueueData.front(); cout << QueueData.back() << endl; return 0; }

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What is the output of this program?
#include <iostream>
#include <queue>
using namespace std;
int main ()
{
queue<int> QueueData;
QueueData.push(15);
QueueData.push(45);
QueueData.back() -= QueueData.front();
cout << QueueData.back() << endl;
return 0;
}