Standard Template Library _Stl_ In C Plus Plus — Part 2 MCQs with Explanations

shuffle is the correct answer to “Which algorithm in C++ STL is used to shuffle the elements in a range randomly”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

To provide a singly linked list implementation is the correct answer to “What is the purpose of the 'std::forward_list' container in C++ STL”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

sort is the correct answer to “Which algorithm in C++ STL is used to sort a range of elements using quicksort”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

To represent a fixed-size array is the correct answer to “What is the purpose of the 'std::array' container in C++ STL”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

accumulate is the correct answer to “Which algorithm in C++ STL is used to compute the sum of elements in a range”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

1.300 1.700 is the correct answer to “What will be the output of the following C++ code? #include <stdio.h> #include <math.h> int main () { printf ("%lf\n", fmod (5.3, 2) ); printf ("%lf\n", fmod (18.5, 4.2) ); return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Caught: bad_cast exception is the correct answer to “What will be the output of the following C++ code? #include <typeinfo> #include <iostream> using namespace std; class shape { public: virtual void myvirtualfunc() const {} }; class mytriangle: public shape { public: virtual void myvirtualfunc() const { }; }; int main() { shape shape_instance; shape &ref_shape = shape_instance; try { mytriangle &ref_mytriangle = dynamic_cast (ref_shape); } catch (bad_cast) { cout << "Caught: bad_cast exception\n"; } return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

all of the mentioned is the correct answer to “Which is best for coding the standard library for c++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

namespace std is the correct answer to “Where are standard exception classes grouped”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

5 4 3 2 1 is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <algorithm> #include <vector> using namespace std; int main () { vector<int> myvector; for (int i = 1; i < 6; ++i) myvector.push_back(i); reverse(myvector.begin(), myvector.end()); for (vector<int> :: iterator it = myvector.begin(); it != myvector.end(); ++it) cout << ' ' << *it; return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

2 is the correct answer to “How many parameters are used in frexp function”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

count is the correct answer to “Pick out parameter for rehash method in unordered_set in c++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Containers that provide a different interface for sequential containers is the correct answer to “What are Container Adaptors”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Containers that implements unsorted(hashed) data structures for quick search in O(1) is the correct answer to “What are Unordered Associative Containers”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

climits is the correct answer to “How does the limits.h header file can be represented in C++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

42 for 10 times is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <vector> using namespace std; int main() { vector<int> v; v.assign( 10, 42 ); for (int i = 0; i < v.size(); i++) { cout << v[i] << " "; } }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

<process> is the correct answer to “Pick out the wrong header file.”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

12.37 is the correct answer to “What will be the output of the following C++ code? #include <stdio.h> #include <stdlib.h> int main () { char s[] = "365.24 29.53"; char* p; double d1, d2; d1 = strtod (s, &p); d2 = strtod (p, NULL); printf ("%.2f\n", d1/d2); return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

abc is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <list> #include <queue> using namespace std; int main() { queue<char> q; q.push('a'); q.push('b'); q.push('c'); cout << q.front(); q.pop(); cout << q.front(); q.pop(); cout << q.front(); q.pop(); }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

test: one two test: one two test: three three three test: three three is the correct answer to “What will be the output of the following C++ code? #include <list> #include <string> #include <iostream> using namespace std ; typedef list<string> LISTSTR; int main() { LISTSTR :: iterator i; LISTSTR test; test.insert(test.end(), "one"); test.insert(test.end(), "two"); LISTSTR test2(test); LISTSTR test3(3, "three"); LISTSTR test4(++test3.begin(), test3.end()); cout << "test:"; for (i = test.begin(); i != test.end(); ++i) cout << " " << *i << endl; cout << "test:"; for (i = test2.begin(); i != test2.end(); ++i) cout << " " << *i << endl; cout << "test:"; for (i = test3.begin(); i != test3.end(); ++i) cout << " " << *i << endl; cout << "test:"; for (i = test4.begin(); i != test4.end(); ++i) cout << " " << *i << endl; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

<iterator> is the correct answer to “Which header file is used for Iterators”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

My exception is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <exception> using namespace std; class myexc: public exception { virtual const char* what() const throw() { return "My exception"; } } myex; int main () { try { throw myex; } catch (exception& e) { cout << e.what() << endl; } return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Form a heap is the correct answer to “What is the use of make_heap in the heap operation”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

3.141600 is the correct answer to “What will be the output of the following C++ code? #include <stdio.h> #include <math.h> int main () { printf ("The value of -3.1416 is %lf\n", fabs (-3.1416)); return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Both Memory allocation errors & I/O errors is the correct answer to “What are the predefined exceptions in c++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

All of the mentioned is the correct answer to “Pick out the correct library in the following choices.”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

4 is the correct answer to “In how many categories, containers are divided”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

#include<exception> is the correct answer to “Which header file is used to declare the standard exception”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

<ios> is the correct answer to “Pick out the wrong header file about strings.”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Bigger than others is the correct answer to “What is the type of the first item in the heap”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

4 is the correct answer to “How many components STL has”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Depends on memory is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <exception> using namespace std; int main () { try { int* myarray= new int[1000]; cout << "Allocated"; } catch (exception& e) { cout << "Standard exception: " << e.what() << endl; } return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

It is the collection of class definitions for standard data structures and a collection of algorithms is the correct answer to “What is meant by standard c++ library”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

3 is the correct answer to “How many Container Adaptors are provided by C++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

tan is the correct answer to “Which of the following mathematical function is overloaded in <complex> and <valarray>”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

#include <float.h> is the correct answer to “Pick out the correct syntax of the header file that can be used with C++.”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

40 is the correct answer to “What will be the output of the following C++ code? #include <stdio.h> #include <stdlib.h> int compareints (const void * a, const void * b) { return ( *(int*)a - *(int*)b ); } int values[] = { 50, 20, 60, 40, 10, 30 }; int main () { int * p; int key = 40; qsort(values, 6, sizeof (int), compareints); p = (int*) bsearch (&key, values, 6, sizeof (int), compareints); if (p != NULL) printf ("%d\n",*p); return 0; }”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Radians is the correct answer to “With which does the trigonometric functions work with angles in c++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

Containers that implements sorted data structures for fast search in O(logn) is the correct answer to “What are the Associative Containers”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.

5 is the correct answer to “How many types of Iterators are provided by C++”. This question is standard in competitive examination syllabi for Standard Template Library _Stl_ In C Plus Plus.