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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 4 of 30

Q31.
What is the output of this program?
    #include <iostream>
    using namespace std;
    void Sum(int a, int b, int & c)
    {
        a = b + c;
        b = a + c;
        c = a + b;
    }
    int main()
    {
        int x = 2, y =3;
        Sum(x, y, y);
        cout << x << " " << y;
        return 0;
    }
Discuss
Answer: (c).2 15
Q32.
Where does the execution of the program starts?
Discuss
Answer: (b).main function
Discuss
Answer: (a).return type, function name
Q34.
which of the following is used to terminate the function declaration?
Discuss
Answer: (c).;
Q35.
How many max number of arguments can present in function in c99 compiler?
Discuss
Answer: (d).127
Q36.
Which is more effective while calling the functions?
Discuss
Answer: (b).call by reference
Q37.
What is the output of this program?
    #include <iostream>
    using namespace std;
    void mani()
    void mani()
    {
        cout<<"hai";
    }
    int main()
    {
        mani();
        return 0;
    }
Discuss
Answer: (c).compile time error
Q38.
What is the output of this program?
    #include <iostream>
    using namespace std;
    void fun(int x, int y)
    {
        x = 20;
        y = 10;
    }
    int main()
    {
        int x = 10;
        fun(x, x);
        cout << x;
        return 0;
    }
Discuss
Answer: (a).10
Q39.
What is the scope of the variable declared in the user definied function?
Discuss
Answer: (b).only inside the {} block
Q40.
How many minimum number of functions are need to be presented in c++?

a.

0

b.

1

c.

2

d.

3

Discuss
Answer: (b).1
Page 4 of 30

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