EmSAT Achieve Exam  >  EmSAT Achieve Questions  >  Consider the following code snippet:#include ... Start Learning for Free
Consider the following code snippet:
#include <iostream>
int main() {
    int* ptr = nullptr;
    std::cout << (ptr == nullptr);
    return 0;
}
What will be the output of the above code?
  • a)
    0
  • b)
    1
  • c)
    Error
  • d)
    Undefined behavior
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider the following code snippet:#include <iostream>int main(...
The pointer 'ptr' is initialized with a 'nullptr' value. '(ptr == nullptr)' compares 'ptr' with 'nullptr' and returns '1' (true) because 'ptr' is 'nullptr'.
Free Test
Community Answer
Consider the following code snippet:#include <iostream>int main(...
Explanation:

Comparing a pointer with nullptr:
- In the given code snippet, a pointer 'ptr' is initialized with nullptr.
- When we compare a pointer with nullptr using the '==' operator, it will return true (1) if the pointer is pointing to nullptr, and false (0) otherwise.

Output of the code:
- As the pointer 'ptr' is explicitly set to nullptr, the comparison 'ptr == nullptr' will result in true, which is represented as 1 in C++.
- Therefore, the output of the code will be 1.

Final Output:
- The output of the above code will be:
b) 1
Attention EmSAT Achieve Students!
To make sure you are not studying endlessly, EduRev has designed EmSAT Achieve study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in EmSAT Achieve.
Explore Courses for EmSAT Achieve exam

Top Courses for EmSAT Achieve

Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer?
Question Description
Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? for EmSAT Achieve 2024 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for EmSAT Achieve. Download more important topics, notes, lectures and mock test series for EmSAT Achieve Exam by signing up for free.
Here you can find the meaning of Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Consider the following code snippet:#include <iostream>int main() { int* ptr = nullptr; std::cout << (ptr == nullptr); return 0;}What will be the output of the above code?a)0b)1c)Errord)Undefined behaviorCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice EmSAT Achieve tests.
Explore Courses for EmSAT Achieve exam

Top Courses for EmSAT Achieve

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev