C++ interview questions part 52
C++ interview questions part 52
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. What is the output of the following C++ program?
#include
#include
using namespace std;
int main ()
{
pair p(1,2);
cout<<"Pair(first,second) = ("<
Correct Answer is : 10
Correct Answer is : 10
2. What is the output of the following C++ code?
#include
#include
using namespace std;
int main ()
{
pair p;
p = make_pair(1,2);
cout<<"Pair(first,second) = ("<
Correct Answer is : func1
Correct Answer is : func1
3. Which of the following is correct way of copying the values of pair p1 into other pair p2?
Correct Answer is : Both 1 & 2
4. What happens if a pair is not initialized?
Correct Answer is : I have 4 apples
5. Which of the following Operator cannot be used with pairs?
Correct Answer is : Executed
6. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
int main ()
{
pair p1(1,2);
pair p2(3,4);
cout<<"Pair(first,second) = ("<
Correct Answer is : Interface
Correct Answer is : Interface
7. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
int main ()
{
pair p1(1,2);
pair p2(3,4);
if(p1 <= p2)
cout<<"P1 is small";
else
cout<<"P2 is small";
return 0;
}
Correct Answer is : It combines the first operand and the second operand
8. Which of the header file is used to implement algorithms provided by C++ STL?
Correct Answer is : both random and cstdlib
9. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
int main()
{
vector v(10, 2);
if (all_of(v.cbegin(), v.cend(), [](int i){ return i % 2 == 0; }))
{
cout << "All numbers are even\n";
}
else
{
cout << "All numbers are not even\n";
}
return 0;
}
Correct Answer is : RAND_MAX
10. How many types of sequence operations are provided by the C++ algorithm STL?
Correct Answer is : 1
11. Which of the following is a Modifying Sequence Operation?
Correct Answer is : 0 to RAND_MAX
12. Which of the following is a Non-modifying Sequence Operation?
Correct Answer is : Depends on the compiler
13. What is the use of random_shuffle() function of STL algorithm?
Correct Answer is : Any number from 0 to 99
14. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
int main()
{
vector v;
for(int i=0;i<10;i++)
v.push_back(i+1);
for(int i=0;i<10;i++)
cout<
Correct Answer is : Any two number from 1 to 10
Correct Answer is : Any two number from 1 to 10
15. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
bool IsOdd (int i)
{
return (i%2)==1;
}
int main ()
{
vector v;
for (int i=1; i<=10; ++i)
v.push_back(i);
vector::iterator bound;
bound = partition (v.begin(), v.end(), IsOdd);
for (vector::iterator it=v.begin(); it!=bound; ++it)
cout << ' ' << *it;
cout << '\n';
for (vector::iterator it=bound; it!=v.end(); ++it)
cout << ' ' << *it;
cout << '\n';
return 0;
}
Correct Answer is : 1
16. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
bool IsOdd (int i)
{
return (i%2)==1;
}
int main ()
{
vector v = {4,2,10,5,1,8};
for(int i=0;i
Correct Answer is : both % and modulo operator
Correct Answer is : both % and modulo operator
17. What is the property of stable sort function provided by the STL algorithm?
Correct Answer is : Time
18. What is the property of partial sort function provided by the STL algorithm?
Correct Answer is :
19. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
int main ()
{
vector v = {4,2,10,5,1,8};
sort(v.begin(), v.end());
if (binary_search(v.begin(), v.end(), 4))
cout << "found.\n";
else
cout << "not found.\n";
return 0;
}
Correct Answer is : A reference value once defined can be reassigned
20. What is the output of the following C++ code?
#include
#include
#include
using namespace std;
int main ()
{
vector v = {4,2,10,5,1,8};
if (binary_search(v.begin(), v.end(), 4))
cout << "found.\n";
else
cout << "not found.\n";
return 0;
}
Correct Answer is : &
