Class 7 Exam > Class 7 Questions > What will be the output of the following C++ ...
Start Learning for Free
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;
}
#include <string>
#include <cstdlib>
using namespace std;
int main(int argc, char const *argv[])
{
int &q = 5;
cout<<q;
return 0;
}
- a)5
- b)Run-time error
- c)Segmentation fault
- d)Compile-time error
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
What will be the output of the following C++ code?#include <iostrea...
References require are other names for variables not for a constant literal. No such assignment are allowed in C++.
Free Test
FREE
| Start Free Test |
Community Answer
What will be the output of the following C++ code?#include <iostrea...
Understanding the Code
The provided C++ code attempts to create a reference to an integer literal. Here’s a breakdown of why this leads to a compile-time error.
Code Analysis
- The line `int &q = 5;` tries to bind a reference variable `q` to the integer literal `5`.
- In C++, a reference must bind to an existing variable, not to a temporary value or literal.
Why Compile-time Error Occurs
- References Must Bind to Variables: References in C++ are meant to provide an alias for existing variables. Since `5` is a constant and not a variable, the compiler cannot create a reference to it.
- Temporary Values: The integer literal `5` is a temporary value, and C++ does not allow references to bind to temporaries.
Expected Output
- Since the code attempts to perform an invalid operation, the compiler will generate an error during compilation, not allowing the program to run.
Conclusion
The correct answer is option 'D' (Compile-time error) due to the invalid reference binding in the code. This highlights the importance of understanding how references work in C++.
The provided C++ code attempts to create a reference to an integer literal. Here’s a breakdown of why this leads to a compile-time error.
Code Analysis
- The line `int &q = 5;` tries to bind a reference variable `q` to the integer literal `5`.
- In C++, a reference must bind to an existing variable, not to a temporary value or literal.
Why Compile-time Error Occurs
- References Must Bind to Variables: References in C++ are meant to provide an alias for existing variables. Since `5` is a constant and not a variable, the compiler cannot create a reference to it.
- Temporary Values: The integer literal `5` is a temporary value, and C++ does not allow references to bind to temporaries.
Expected Output
- Since the code attempts to perform an invalid operation, the compiler will generate an error during compilation, not allowing the program to run.
Conclusion
The correct answer is option 'D' (Compile-time error) due to the invalid reference binding in the code. This highlights the importance of understanding how references work in C++.
Attention Class 7 Students!
To make sure you are not studying endlessly, EduRev has designed Class 7 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 7.
|
Explore Courses for Class 7 exam
|
|
Similar Class 7 Doubts
Top Courses for Class 7View all
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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer?
Question Description
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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer?.
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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer?.
Solutions for 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 7.
Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free.
Here you can find the meaning of 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice 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;}a)5b)Run-time errorc)Segmentation faultd)Compile-time errorCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 7 tests.
|
|
Explore Courses for Class 7 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup