Introduction to C++ MCQ question and answer with solution

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Each section contains 100 MCQs on Introduction to C plus plus .

What are the actual parameters in C++?

A) Parameters with which functions are called B) Parameters which are used in the definition of a function C) Variables other than passed parameters in a function D) Variables that are never used in the function

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What will be the output of the following C++ code?

#include<stdio.h>
int main(int argc, char const *argv[])
{
	char a = 'a';
	printf("%d\n", (int)sizeof(a));
	return 0;
}

A) Output in C is 1 and in C++ is 4 B) Output in C is 4 and in C++ is 1 C) Output in C is 1 and in C++ is 1 D) Output in C is 4 and in C++ is 4

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following is used to make an abstract class?

A) By using virtual keyword in front of a class declaration B) By using an abstract keyword in front of a class declaration C) By declaring a virtual function in a class D) By declaring a pure virtual function in a class

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following supports the concept that reusability is a desirable feature of a language?

A) It reduces the testing time B) It reduces maintenance cost C) It decreases the compilation time D) It reduced both testing and maintenance time

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What will be the output of the following C++ code?

#include<iostream>
using namespace std;
int main ()
{
   int cin;
   cin >> cin;
   cout << "cin: " << cin;
   return 0;
}

A) cin: garbage value B) Error C) Segmentation fault D) Nothing is printed

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What happens if the following line is executed in C and C++?

int *p = malloc(10);

A) Error in both C and C++ B) Warning in both C and C++ C) Error in C++ and successful execution in C D) Error in C and successful execution in C++

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following is C++ equivalent for printf()?

A) cin B) cout C) print D) input

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following is correct?

A) struct tag is required in both C and C++ while declaring an object of the structure B) struct is not required in C but required in C++ while declaring an object of the structure C) struct is not required in C++ but required in C while declaring an object of the structure D) struct tag is not required in both C and C++ while declaring an object of the structure

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following statement is true?
I. In Procedural programming languages, all function calls are resolved at compile-time
II. In Object Oriented programming languages, all function calls are resolved at compile-time

A) I only B) II only C) Both I and II D) Neither I nor II

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following is correct about dynamic polymorphism?

A) In dynamic polymorphism, the conflict between the function call is resolved during the compile time B) In dynamic polymorphism, the conflict between the function call is resolved during the run time C) In dynamic polymorphism, the conflict between the function call is never resolved during the execution of the program D) In dynamic polymorphism, the conflict between the function call is resolved at the beginning of the program

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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Introduction to C++ MCQ question and answer with solution | C++ Programimg MCQs