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Pointers and References in C++ MCQ question and answer with solution | C++ Programimg MCQs

Learn Pointers and References in C++ MCQ Questions and answers with easy and logical explanations in C++ Programimg. Pointers and References in C++ MCQ question provides all type of technical mcq questions which is important for technical exams, campus exams and other entrance examination. Page-7 section-1

61
Which of the following is illegal?
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Answer & Solution
Answer: Option C
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62
What will be the output of the following C++ code?
#include <iostream>
#include <string>
#include <cstdlib>
 
using namespace std;
 
int main(int argc, char const *argv[])
{
	int a = 5;
	int *p = &a;
	int *(&q) = p;
	cout<<q;
	return 0;
}
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Answer & Solution
Answer: Option B
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63
Which one of the following is not a possible state for a pointer.
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Answer & Solution
Answer: Option D
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64
Which value can we not assign to reference?
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Answer & Solution
Answer: Option D
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65
What will be the output of the following C++ code?
#include <iostream>  
using namespace std;
int f(int &x, int c) 
{
   c  = c - 1;
   if (c == 0) return 1;
   x = x + 1;
   return f(x, c) * x;
} 
int main(int argc, char const *argv[])
{
	int a = 4;
	cout<<f(a,a);
	return 0;
}
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Answer & Solution
Answer: Option A
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66
What will be the output of the following C++ code?
#include <iostream>
#include <string>
#include <cstdlib>
 
using namespace std;
 
int main(int argc, char const *argv[])
{
	int &q = NULL;
	cout<<q;
	return 0;
}
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Answer & Solution
Answer: Option D
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67
Which reference modifier is used to define the reference variable?
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Answer & Solution
Answer: Option A
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68
The operator used for dereferencing or indirection is . . . . . . . .
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Answer & Solution
Answer: Option A
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69
What will be the output of the following C++ code?
#include <iostream>
#include <string>
#include <cstdlib>
 
using namespace std;
 
int main(int argc, char const *argv[])
{
	int &q = 5;
	cout<<q;
	return 0;
}
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Answer & Solution
Answer: Option D
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70
When does the void pointer can be dereferenced?
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Answer & Solution
Answer: Option B
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