MENU
What happens when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
class A {
int a;
public:
A(int a) : a(a) {}
int getA() const { return a; } void setA(int a) { this?>a = a; }
};
int main () {
int t[] = {1,2,3,2,3,5,1,2,7,3,2,1,10, 4,4,5};
deque
int number = count(d.begin(), d.end(), 2);
cout<< number< 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
32 comments · newest first
MY
My
10 months ago
Definitely a compilation error, right?
SH
Shawna
10 months ago
Wait, is there a typo in the setA function?
FI
Filiberto
10 months ago
I'm pretty sure it outputs 4.
WI
Wilburn
10 months ago
The code counts occurrences of 2 in the deque.
GA
Galen
11 months ago
I thought it would be 3, but I guess I was wrong!
JO
Jovita
11 months ago
Wait, I’m not sure if the setA function has a typo. Does this affect whether the code runs or not?
SH
Shawnda
11 months ago
I feel like I practiced a similar question, and I think the answer is 4 since '2' appears four times in the array.
PA
Pamella
11 months ago
I think the code should compile fine, but I’m a bit confused about the output. Did we cover how to count elements in a deque?
CH
Cherelle
11 months ago
I remember something about the count function, but I'm not sure how many times '2' appears in the array.
NI
Nida
12 months ago
Ah, I see now. The `deque` is initialized with the array `t`, which contains the values `{1,2,3,2,3,5,1,2,7,3,2,1,10, 4,4,5}`. The `count()` function then counts the number of occurrences of the value `2` in the `deque`, which is 4. So the correct answer is A.
SH
Sharika
12 months ago
I'm not entirely sure about this one. The code looks a bit complex with the `deque` and the `count()` function. I'll need to carefully step through the logic and make sure I understand what's happening. Maybe I'll try running the code myself to see the output.
ED
Eden
12 months ago
Okay, I think I've got this. The code creates a `deque` of integers and then uses `count()` to count the number of occurrences of the value `2` in the `deque`. The output should be the number of times `2` appears in the `deque`, which is the correct answer.
AJ
Aja
1 year ago
Hmm, I'm a bit confused about the `deque` container. I'll need to review how it works and how it differs from other containers like `vector`. I should also double-check the syntax for the `count()` function to make sure I understand it correctly.
AL
Alayna
1 year ago
This looks like a straightforward question about using the `count()` function from the `` library. I'll carefully read through the code and think about how the `count()` function works with the `deque` container.
AS
Asha
1 year ago
This is too easy, the answer has to be B. I mean, come on, counting occurrences of a number? That's like programming 101. Unless... there's some kind of sneaky twist I'm missing. Nah, I'm sticking with B.
IL
Ilene
1 year ago
I'm with you guys, B seems like the correct answer here.
CE
Cecilia
1 year ago
Yeah, counting occurrences is a basic concept. B sounds right to me too.
AR
Arlette
1 year ago
I agree, it seems pretty straightforward. B is the most likely answer.
ST
Stevie
1 year ago
Haha, the code looks like it was written by a prankster. Throwing in a random class A just to confuse us. But I'm not falling for that trap, I'm going with B!
AD
Adelle
1 year ago
Wait, wait, wait... why is there a class A in the code? Is that just a red herring or is it somehow relevant? Ah, who cares, I'll just go with the most straightforward answer, which is B.
OD
Odette
1 year ago
No, the class A doesn't affect the output, the answer is B for sure.
TA
Tamera
1 year ago
I'm not sure about that, I think the class A might have some impact on the output.
AN
Andrew
1 year ago
Yeah, I agree, the code is just counting the number 2 in the deque, so the answer is B.
SA
Salley
1 year ago
I think the class A is just there to confuse us, the answer is B.
WA
Wava
2 years ago
Oh, that makes sense. I see your point now.
IR
Ira
2 years ago
I disagree, I believe the answer is A) 4 because there are 4 occurrences of the number 2 in the deque
CO
Cornell
2 years ago
Hmm, this looks like a simple problem of counting occurrences of a number in a container. I'll go with option B, since 2 appears 3 times in the given array.
FA
Fatima
1 year ago
So, the output will be 3.
BR
Brande
1 year ago
Yes, because there are 3 occurrences of 2 in the array.
DE
Delbert
1 year ago
I agree, it should be 3.
RU
Rueben
1 year ago
I think the answer is B.
WA
Wava
2 years ago
I think the answer is B) 3