C++ miscellaneous
practice.

Which type of relationship is modelled by Composition?

Which of the following describes the protected access specifier?

Which is used to use a function from one source file to another?

Which is used for formatting purpose in c++?

Which is the correct way of handling arguments with spaces?

What will be the output of the following C++ code?

#include <iostream>
#include <set>
using namespace std;
int main()
{
    set<int> tst;
    tst.insert(12);
    tst.insert(21);
    tst.insert(32);
    tst.insert(31);
    set<int> :: const_iterator pos;
    for(pos = tst.begin(); pos != tst.end(); ++pos)
    cout << *pos << ' ';
    return 0;
}

What happens when no argument is supplied to flip() function?

What will be the output of the following C++ code?

#include <iostream>
#include <algorithm>
using namespace std;
int main () 
{
    int myints[] = {1, 2, 3};
    sort (myints, myints + 3);
    do 
    {
    } while ( next_permutation(myints, myints + 3) );
    cout << myints[0] << ' ' << myints[1] << ' ' << myints[2] << '\n';
    return 0;
}

How the size of a vector increases once it is full?

What will be the output of the following C++ code?

#include <iostream>
#include<type_traits>
using namespace std;
class Base
{
    public:
};
int main()
{
	Base b;
	cout<<sizeof(b);
	return 0;
}

Which of the things does not require instantiation?

What will be the output of the following C++ code?

#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main ()
{
    string mystr;
    float price = 0;
    int quantity = 0;
    cout << "Enter price: ";
    getline (cin, mystr);
    stringstream(mystr) >> price;
    cout << "Enter quantity: ";
    getline (cin, mystr);
    stringstream(mystr) >> quantity;
    cout << "Total price: " << price * quantity << endl;
    return 0;
}

Which of the following can derived class inherit?

Which interface determines how your class will be used by another program?

What is the use of the function "showbase"?

How many runtime error messages associated with exception?

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main()
{
    try
    {
        try
        {
            throw 20;
        }
        catch (int n)
        {
            cout << "Inner Catch\n";
        }
    }
    catch (int x)
    {
        cout << "Outer Catch\n";
    }
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
#include <vector>
using namespace std;
int main ()
{
    vector<int> a (3, 0);
    vector<int> b (5, 0);
    b = a;
    a = vector<int>();
    cout << "Size of a " << int(a.size()) << '\n';
    cout << "Size of b " << int(b.size()) << '\n';
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
using namespace std; 
template <typename T>
void fun(const T&x)
{
    static int count = 0;
    cout << "x = " << x << " count = " << count;
    ++count;
    return;
}
 
int main()
{
    fun<int> (1); 
    cout << endl;
    fun<int>(1); 
    cout << endl;
    fun<double>(1.1);
    cout << endl;
    return 0;
}

Which of the following is the correct syntax of accessing the first element of a pair p?