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Welcome to the Strings,Streams and Numerics in C++ MCQs Page

Dive deep into the fascinating world of Strings,Streams and Numerics in C++ with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Strings,Streams and Numerics in C++, a crucial aspect of Object Oriented Programming Using C++. In this section, you will encounter a diverse range of MCQs that cover various aspects of Strings,Streams and Numerics in C++, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming Using C++.

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Check out the MCQs below to embark on an enriching journey through Strings,Streams and Numerics in C++. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming Using C++.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Strings,Streams and Numerics in C++. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Strings,Streams and Numerics in C++ MCQs | Page 15 of 21

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Q141.
Which header file is used to manipulate the vector algebra in c++?
Discuss
Answer: (c).vmath
Q142.
What type of reference should be used in vector arithmetic?
Discuss
Answer: (b).const
Q143.
What is the output of this program?
    #include <iostream>
    using namespace std;
    class vec
    {
        public:
        vec(float f1, float f2) 
        {
            x = f1;
            y = f2;
        }
        vec()
        {
        }
        float x;
        float y;
    };
    vec addvectors(vec v1, vec v2);
    int main() 
    {
        vec v1(3, 6);
        vec v2(2, -2);
        vec v3 = addvectors(v1, v2);
        cout << v3.x << ", " << v3.y << endl;
    }
    vec addvectors(vec v1, vec v2)
    {
        vec result;
        result.x = v1.x + v2.x;
        result.y = v1.y + v2.y;
        return result;
    };
Discuss
Answer: (c).5, 4
Q144.
What is the output of this program?
    #include <iostream>
    #include <vector>
    using namespace std;
    int main ()
    {
        vector<bool> mask;
        mask.push_back(true);
        mask.flip();
        cout << boolalpha;
        for (unsigned i = 0; i < mask.size(); i++)
        cout << mask.at(i);
        return 0;
    }
Discuss
Answer: (a).false
Q145.
What will be the type of output of vector cross product?
Discuss
Answer: (b).Vector
Q146.
Which function is used to optimize the space in vector?
Discuss
Answer: (b).bool
Discuss
Answer: (a).Computer graphics
Q148.
Which header file is used to operate on numeric sequences?
Discuss
Answer: (b).numeric
Q149.
Which mathematics library is used for vector manipulation in c++?
Discuss
Answer: (c).blitz++
Discuss
Answer: (b).Returns the result of accumulating all the values in the range

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