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Welcome to the Functions in C++ MCQs Page

Dive deep into the fascinating world of Functions in C++ with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Functions 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 Functions 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 Functions 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 Functions in C++. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Functions in C++ MCQs | Page 3 of 30

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Q21.
How many types of comments are there in c++?

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Discuss
Answer: (a).comments are parts of the source code disregarded by the compiler
Q23.
What type of comments does c++ support?
Discuss
Answer: (c).single line and multi line
Q24.
What is the output of this program?
    #include <iostream>
    using namespace std;
    int main()
    {
        /* this is comment*
        cout << "hello world";
        return 0;
    }
Discuss
Answer: (c).compile time error
Q25.
What is used to write multi line comment in c++?
Discuss
Answer: (a)./* โ€ฆ. */
Discuss
Answer: (a).distinguishes between comments and code
Q27.
What is the output of this program?
    #include <iostream>
    using namespace std;
    long factorial (long a)
    {
        if (a > 1)
            return (a * factorial (a + 1));
        else
            return (1);
    }
    int main ()
    {
        long num = 3;
        cout << num << "! = " << factorial ( num );
        return 0;
    }
Discuss
Answer: (c).segmentation fault
Q28.
What is the output of this program?
    #include <iostream>
    using namespace std;
    void square (int *x)
    {
 *x = (*x + 1) * (*x);
    }
    int main ( )
    {
 int num = 10;
        square(&num);
 cout << num;
 return 0;
    }
Discuss
Answer: (d).110
Q29.
What is the output of this program?
    #include <iostream>
    using namespace std;
    int add(int a, int b);
    int main()
    {
        int i = 5, j = 6;
        cout << add(i, j) << endl;
        return 0;
    }
    int add(int a, int b )
    {
        int sum = a + b;
        a = 7;
        return a + b;
    }
Discuss
Answer: (c).13
Discuss
Answer: (a).It will not return value to its caller

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