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Interview Questions on STL in C++ : (9)

Question: 1

Is duplicate data allowed in set?

(A) Yes
(B) No

Compiler
Level: Practitioner Category: stl
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Question: 2

Which data structure is used by Map?

(A) AVL Tree
(B) Binary Tree
(C) Balance Binary Tree
(D) None of these

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 3

From which STL we can insert/remove data
from anywhere?

(A) Vector
(B) Deque
(C) Stack
(D) List

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 4

What is the correct way to initialize vector in C++?

(A) std::vector<integer> vecOfInts;
(B) std::vector int <vecOfInts>
(C) std::vector(int) vecOfInts;
(D) std::vector<int> vecOfInts;

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 5

What is true about his statement in C++?
std::vector<int> vecInts(5);

(A) Initialize a Vector with 5 int & all default value is 0
(B) Initialize a Vector with 5 int
(C) Initialize a Vector with 5 int & all default values will be garbage
(D) Initialize a Vector with 5 int & All default value with be -1

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 6

Is it possible to initialize any Vector with an Array in C++?

(A) Yes
(B) No

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 7

Will below program run without any compilation errors?
Assume that all header files are included.

int main()
{

std::list<std::string> listOfStr;
listOfStr.push_back("1");
listOfStr.push_back("2");
listOfStr.push_back("3");
listOfStr.push_back("4");
 
// Initialize a vector with std::list
std::vector<std::string> vecOfStr(listOfStr.begin(),listOfStr.end());
 
for(std::string str : vecOfStr)
    std::cout<<str<<std::endl;

return 0;
}

(A) Yes
(B) No

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 8

What should be the output of below program? Assume that all header files are included.

int main()
{
std::list<std::string> listOfStr;
listOfStr.push_back("1");
listOfStr.push_back("2");
listOfStr.push_back("3");
listOfStr.push_back("4");
 
// Initialize a vector with std::list
std::vector<std::string> vecOfStr(listOfStr.begin(), listOfStr.end());
 
for(std::string str : vecOfStr)
    std::cout<<str;

return 0;
}

(A) 1 2 3 4
(B) 1234
(C) 12340
(D) 01234

Compiler
Level: Practitioner Category: stl
[Posted by: | ]

Question: 9

What does this function do?

void func() {
	std::vector<std::string> vecOfString(5, "Hi");
 
	for (std::string str : vecOfStr)
		std::cout << str << std::endl;
 
}

(A) Initialize vect to 5 string with value "Hi"
(B) Initialize vect's first element to a string with value "Hi" & prints them
(C) Initialize vect to 1 string with value "Hi" & prints only one
(D) Initialize vect to 5 string with value "Hi" & prints them

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Interview Questions on STL in C++ : (9)

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