C++ miscellaneous MCQ question and answer with solution | C++ Programimg MCQs

x = f(arg1, arg2);

#include <iostream>
#include <string>
using namespace std;
int main()
{
    cout<<extent<remove_all_extents<string[10][20][30]>::type>::value;
    return 0;
}

#include <iostream>
#include <queue>
using namespace std;
int main ()
{
    priority_queue<int> mypq;
    mypq.push(10);
    mypq.push(20);
    mypq.push(15);
    cout  << mypq.top() << endl;
    return 0;
}

#include <iostream>
#include <locale>
using namespace std;
int main()
{
    locale mylocale("");
    cout.imbue( mylocale );
    cout << (double) 3.14159 << endl;
    return 0;
}