Introduction Easy Questions and Answers

What will initialize the list of arguments in stdarg.h header file?

Correct Option: A

va_start

What is the output of this program?

#include 
    #include 
    using namespace std;
    void function(std::string message, ...);
    int main()
    {
        function("InterviewMania", 5, 7, 10, 8, 9);
        return 0;
    }
    void function(std::string message, ...)
    {
        va_list ptr;
        int number;
        va_start(ptr, message);
        number = va_arg(ptr, int);
        number = va_arg(ptr, int);
        cout << number;
    }

Correct Option: C

In this program, we are moving the pointer to the second value and printing it.

Which header file should you include if you are to develop a function that can accept variable number of arguments?

Correct Option: C

stdarg.h

What is the output of this program?

#include 
    #include 
    using namespace std;
    int funcion(char ch,...);
    int main()
    {
        int p, q;
        p = funcion('B', 2, 3, 4);
        q = funcion('3', 2.0, 2, '3', 2.0f, 10);
        cout << p<<" " << q;
        return 0;
    }
    int funcion(char ch,...)
    {
        return ch;
    }

Correct Option: B

In this program, we are returning the ascii value of the character and printing it.

What is the output of this program?

#include 
    #include 
    using namespace std;
    void List(int, ...);
    int main()
    {
        List(2, 5, 10);
        List(3, 6, 9, 7);
        return 0;
    }
    void List(int num, ...)
    {
        va_list a;
        int k;
        va_start(a, num);
        while (num-->0) 
        {
            k = va_arg(a, int);
            cout << k;
        }
        va_end(a);
    }

Correct Option: E

In this program, we are eradicating the first value by comparing using while operator.

Introduction

Introduction

C++ Programming

Correct Option: A

Correct Option: C

Correct Option: C

Correct Option: B

Correct Option: E