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What will be the output of the following C++ code?
#include <iostream>
using namespace std;
int fun(int=0, int = 0);
int main()
{
cout << fun(5);
return 0;
}
int fun(int x, int y) { return (x+y); }
using namespace std;
int fun(int=0, int = 0);
int main()
{
cout << fun(5);
return 0;
}
int fun(int x, int y) { return (x+y); }
- a)-5
- b)0
- c)10
- d)5
Correct answer is option ''. Can you explain this answer?
Most Upvoted Answer
What will be the output of the following C++ code?#include <iostrea...
C++ allows to define such prototype of the function in which you are not required to give variable names only the default values. While in function definition you can provide the variable names corresponding to each parameter.
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What will be the output of the following C++ code?#include <iostrea...
Code Explanation
The provided C++ code includes a function with default parameters and demonstrates how function overloading works.
Code Breakdown
- Function Declaration:
cpp
int fun(int=0, int=0);
- This line declares a function `fun` that takes two integer parameters, both of which have default values of `0`.
- Main Function:
cpp
int main() {
cout < />
return 0;
}
- The `main` function calls `fun(5)`, passing `5` as the first argument. Since only one argument is provided, the second parameter `y` will take its default value of `0`.
- Function Definition:
cpp
int fun(int x, int y) {
return (x + y);
}
- This defines the function `fun`, which adds its two parameters, `x` and `y`, and returns the result.
Output Calculation
- When `fun(5)` is called:
- `x` is assigned `5`
- `y` takes the default value of `0`
- Therefore, the expression `x + y` evaluates to:
- `5 + 0 = 5`
Conclusion
- The output of the code will be `5`, making the correct answer option d) 5.
This illustrates how default parameters in C++ can simplify function calls by allowing certain arguments to be omitted while still providing meaningful outputs.
The provided C++ code includes a function with default parameters and demonstrates how function overloading works.
Code Breakdown
- Function Declaration:
cpp
int fun(int=0, int=0);
- This line declares a function `fun` that takes two integer parameters, both of which have default values of `0`.
- Main Function:
cpp
int main() {
cout < />
return 0;
}
- The `main` function calls `fun(5)`, passing `5` as the first argument. Since only one argument is provided, the second parameter `y` will take its default value of `0`.
- Function Definition:
cpp
int fun(int x, int y) {
return (x + y);
}
- This defines the function `fun`, which adds its two parameters, `x` and `y`, and returns the result.
Output Calculation
- When `fun(5)` is called:
- `x` is assigned `5`
- `y` takes the default value of `0`
- Therefore, the expression `x + y` evaluates to:
- `5 + 0 = 5`
Conclusion
- The output of the code will be `5`, making the correct answer option d) 5.
This illustrates how default parameters in C++ can simplify function calls by allowing certain arguments to be omitted while still providing meaningful outputs.
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What will be the output of the following C++ code?#include <iostream>using namespace std;int fun(int=0, int = 0);int main(){ cout << fun(5); return 0;}int fun(int x, int y) { return (x+y); }a)-5b)0c)10d)5Correct answer is option ''. Can you explain this answer?
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What will be the output of the following C++ code?#include <iostream>using namespace std;int fun(int=0, int = 0);int main(){ cout << fun(5); return 0;}int fun(int x, int y) { return (x+y); }a)-5b)0c)10d)5Correct answer is option ''. Can you explain this answer? for Class 7 2025 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>using namespace std;int fun(int=0, int = 0);int main(){ cout << fun(5); return 0;}int fun(int x, int y) { return (x+y); }a)-5b)0c)10d)5Correct answer is option ''. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What will be the output of the following C++ code?#include <iostream>using namespace std;int fun(int=0, int = 0);int main(){ cout << fun(5); return 0;}int fun(int x, int y) { return (x+y); }a)-5b)0c)10d)5Correct answer is option ''. Can you explain this answer?.
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