Cplusplus Programming Seq Con Vector Class 1 Online Exam Quiz
Cplusplus Programming Seq Con Vector Class 1 GK Quiz. Question and Answers related to Cplusplus Programming Seq Con Vector Class 1. MCQ (Multiple Choice Questions with answers about Cplusplus Programming Seq Con Vector Class 1
Which of the following header file is needed to use vectors in your program?
Options
A : <array>
B : <vector>
C : <containers>
D : <stdio>
What are the vectors?
Options
A : Arrays with dynamic size
B : Arrays with different types of elements
C : Same as array classes
D : Arrays with static size but use template classes
What is the difference between begin() and cbegin() in vectors?
Options
A : both are same
B : begin() returns iterator to first element and cbegin() returns iterator to last element
C : begin() returns an iterator to first element whereas cbegin() returns constant iterator to first element
D : begin() returns returns first element cbegin() returns void
What is the difference between begin() and rbegin()?
Options
A : both are the same
B : begin() returns an iterator to the first element and rbegin() returns an iterator to an element kept at the end of the vector
C : begin() returns an iterator to first element whereas rbegin() returns constant iterator to first element
D : begin() returns returns first element rbegin() returns void
Which of the following(s) can be used to access the first element of a vector v?
Options
A : v.begin()
B : v.cbegin()
C : v[0]
D : all of the mentioned
Which of the following(s) can be used to access the last element of a vector v?
Options
A : v.end()
B : v.cend()
C : both v.end() and v.cend()
D : vectors do not have a function to access the last element
Which of the following function is used to get the actual number of elements stored in vector?
Options
A : v.size()
B : v.capacity()
C : v.max_size()
D : v.no_of_elements()
Which function is used to get the total capacity of a vector?
Options
A : v.size()
B : v.capacity()
C : v.max_size()
D : v.no_of_elements()
Which is the following is syntactically correct for vector<int> v?
Options
A : vector <int> :: const_iterator itr = v.rbegin();
B : vector <int> :: reverse_iterator itr = v.begin();
C : vector <int> :: iterator itr = v.begin();
D : vector <int> :: iterator itr = v.cbegin();
How the size of a vector increases once it is full?
Options
A : Vector increases its capacity one by one
B : Vector doubles its capacity after it is full
C : Vector increases its capacity by half of its previous size
D : Vector increases its capacity by a constant factor
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