MENU
What happens when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
template
ostream & out;
Out(ostream & o): out(o){}
void operator() (const T & val ) { out< int main() { int t1[]={3,2,4,1,5}; int t2[]={5,6,8,2,1}; vector sort(t1, t1+5); sort(t2, t2+5); set_union(t1,t1+5,t2,t2+5,v1.begin()); for_each(v1.begin(), v1.end(), Out return 0; } Program outputs:
Suggested Answer: E
Get Premium CPP Questions
as Interactive Web-Based Practice Test or PDF
Real Exam Format
Detailed Explanations
Instant Access
Get Your Practice Test
38 comments · newest first
KR
Krystal
11 months ago
Definitely not a compilation error, so E is wrong.
ME
Melina
11 months ago
Wait, why are there two 1s? That seems off.
TI
Timothy
11 months ago
I think it should be option D, right?
DI
Dierdre
11 months ago
It outputs 1 1 2 2 3 4 5 5 6 8.
JA
Jani
11 months ago
The code compiles fine.
NA
Naomi
12 months ago
I feel like the output might be option D, but I can't recall if the vector gets filled with zeros after the unique elements.
AR
Arlette
12 months ago
I'm a bit confused about the vector size. Will it actually hold all the unique elements from both arrays?
CA
Carlee
12 months ago
I remember something about `set_union` needing a sorted range, so I guess it should work with the sorted arrays.
KA
Kanisha
1 year ago
I think the code should compile fine since all the included libraries are correct, but I'm not sure about the output.
RE
Refugia
1 year ago
This seems straightforward enough. I'll just need to carefully read through the code and the output options to determine the correct answer.
LE
Lelia
1 year ago
I'm a bit confused by the use of the `Out` struct. I'll need to make sure I understand how that's being used to print the vector elements.
GA
Gail
1 year ago
Okay, let me think this through step-by-step. The code is sorting two arrays, then using set_union to combine them into a vector. I'll need to pay close attention to the order of the elements in the final output.
RO
Rosendo
1 year ago
Hmm, this looks like a tricky one. I'll need to carefully trace the logic of the code to figure out what's happening.
DE
Devora
1 year ago
Ah, I see what's going on now. The key is understanding how `set_union` works and how it handles duplicate elements. I think I've got this!
JE
Jerry
1 year ago
I'm a bit confused by the wording of this question. Are the switches using Layer 3 protocols to eliminate collisions? Or do the ports themselves act as independent collision domains? I'll have to review my notes to be sure.
KI
Kimberlie
1 year ago
This question seems straightforward, I think I can handle it.
MA
Margarett
1 year ago
I'm leaning towards the configure terminal action, but I honestly can't recall if that's the right approach for overriding events.
BE
Berry
1 year ago
Option E? Seriously? The only error here is the person who wrote this exam question. They must have been coding in COBOL or something.
RY
Ryann
1 year ago
Option D? Really? That's just nonsense. This code is clearly working correctly, and the output should be option A or B.
EL
Elvera
1 year ago
Haha, option C is a good one! The code must be broken if it's printing the elements in reverse order. Maybe the programmer is a time traveler.
LA
Lavonna
1 year ago
User1: Or maybe they wanted to test our attention to detail.
EL
Elmira
1 year ago
User3: It could be a logical error causing the reverse order.
JA
Jaleesa
1 year ago
User2: Maybe the programmer made a mistake in the code.
ZA
Zack
1 year ago
User1: Yeah, option C is pretty funny.
KI
Kimberely
1 year ago
I think option B is the correct answer. The set_union function should return the unique elements from both arrays, and the output seems to be in the correct order.
EL
Eleonora
1 year ago
Looks like the code is working fine then. Option B it is.
LE
Leota
1 year ago
Yes, I agree. The set_union function should return unique elements in order.
LA
Laura
1 year ago
I think option B is the correct answer.
LA
Lacey
1 year ago
The output should be option A. The set_union function correctly merges the two sorted arrays and stores the result in the vector v1.
CA
Candida
1 year ago
E) compilation error
HE
Hershel
1 year ago
The output is correct because set_union merges the sorted arrays t1 and t2 into v1.
DO
Dorethea
1 year ago
A) 1 2 3 4 5 6 7 8 9 10
AR
Arthur
2 years ago
I'm not sure about the syntax error, but I think the output should be A) 1 2 3 4 5 6 7 8 9 10 because the code is sorting and merging two arrays into a vector.
RA
Ranee
2 years ago
I agree with Kiera, the code is missing a semicolon after 'ostream & out'. So, the correct answer should be E) compilation error.
KI
Kiera
2 years ago
I think the answer is E) compilation error because there seems to be a syntax error in the code.
JI
Jillian
2 years ago
But the code is sorting and merging arrays, so I think it's E.
LY
Lynna
2 years ago
I disagree, I believe the answer is B.
JI
Jillian
2 years ago
I think the answer is A.