C++ miscellaneous
practice.

The switch statement is also called as?

Which container is used to keep priority based elements?

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

#include<iostream>
using namespace std;
int main()
{
    int a = 5;
    auto check = [](int x) 
    {
	if(x == 0)
		return false;
	else
		return true;
    };
    cout<<check(a)<<endl;
    return 0;
}

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

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
bool mygreater (int i,int j) 
{
    return (i > j);
}
int main () 
{
    int myints[] = {10, 20, 30, 30, 20, 10, 10, 20};
    vector<int> v(myints, myints + 8);
    pair<vector<int> :: iterator, vector<int> :: iterator> bounds;
    sort (v.begin(), v.end());
    bounds = equal_range (v.begin(), v.end(), 20);
    cout  << (bounds.first - v.begin());
    cout << " and " << (bounds.second - v.begin()) << '\n';
    return 0;
}

What is the function of shift()?

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

#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;
template<class T>
class A
{
	T a;
    public:
	A(){}
	~A(){}
};
 
int main(int argc, char const *argv[])
{
	A <char>a1;
	A <int>a2;
	A <double>a3;
	cout<<sizeof(a1)<<endl;
	cout<<sizeof(a2)<<endl;
	cout<<sizeof(a3)<<endl;
	return 0;
}

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

#include <iostream>
using namespace std;
class Cat
{
    public:
    int age;
    int weight;
};
int main()
{
    Cat f;
    f.age = 56;
    cout << "Gates is " ;
    cout << f.age << " years old.\n";
}

Which classes can have vtable?

What are the operators available in C++ for dynamic allocation and de-allocation of memories?

How many types of templates are there in c++?

Which access specifier is used where one wants data members to be accessed by other classes but not from outside objects?

What is sequence container arrays?

Which of the following queue container can expand or shrink from both directions?

Which type of heap is implemented in STL heap?

What is meant by container ship?

From where does the template class derived?

Which function is used to position back from the end of file object?

Which of the following is the correct syntax of using pair p?

How one can restrict a function to throw particular exceptions only?

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

#include <stdio.h>
int main ()
{
    int n;
    FILE * p;
    char buffer [5];
    p = fopen ("myfile.txt", "w+");
    for ( n = 'A' ; n <= 'D' ; n++)
    fputc ( n, p);
    rewind (p);
    fread (buffer, 1, 5, p);
    fclose (p);
    buffer[3] = '\0';
    puts (buffer);
    return 0;
}