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C++ Institute CPP Exam - Topic 4 Question 63 Discussion

What happens when you attempt to compile and run the following code?#include #include #include using namespace std;int main () {int t[] = {1,2,3,4,5,1,2,3,5,4};vector v (t,t+10);vector::iterator it;int m1[] = {1, 3, 2};it = find_end (v.begin(), v.end(), m1, m1+3);if (it != v.end())cout
C) no output
A) program outputs: Found at position: 5
B) program outputs: Found at position: 0
D) program outputs: Found at position: 10

C++ Institute CPP Exam - Topic 4 Question 63 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 63
Topic #: 4
[All CPP Questions]

What happens when you attempt to compile and run the following code?

#include

#include

#include

using namespace std;

int main () {

int t[] = {1,2,3,4,5,1,2,3,5,4};

vector v (t,t+10);

vector::iterator it;

int m1[] = {1, 3, 2};

it = find_end (v.begin(), v.end(), m1, m1+3);

if (it != v.end())

cout << "Found at position: " << it?v.begin() << endl;

return 0;

}

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Suggested Answer: C

by Frederica at Mar 01, 2023, 08:45 PM

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Gerald
8 months ago
The iterator might not be pointing correctly, so I'm skeptical about the output.
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Claudia
9 months ago
I agree with Emiko, that makes sense!
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Josephine
9 months ago
Wait, isn't the output supposed to be "no output"?
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Emiko
9 months ago
I think it should output "Found at position: 5".
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Alayna
9 months ago
The code uses find_end to search for a sequence in the vector.
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Desire
9 months ago
I feel like the output should be the position of the last match, but I can't remember if it starts counting from 0 or 1.
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Hester
9 months ago
I practiced a similar question where `find_end` was used, and I think it returned an iterator to the end if not found. So maybe it outputs nothing?
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Kami
9 months ago
I think the iterator `it` should point to the last occurrence of the sequence, but I can't recall what happens if it doesn't find it.
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Jenifer
9 months ago
I remember something about `find_end`, but I'm not sure if it actually returns the position correctly.
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Helga
10 months ago
This question seems straightforward. I think the high-speed rail connection between the two cities would be considered a threat of a substitute product or service.
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Val
10 months ago
This question seems straightforward, but I want to make sure I understand the key requirements before answering.
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Jani
10 months ago
Hmm, I'm a little unsure about the relationship between the Trainer_c and Gym__c objects. I'll need to double-check the field names and syntax to make sure I get this right.
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Elly
1 year ago
Ha! I bet the answer is 'D' - 'program outputs: Found at position: 10'. The 'find_end' function returns an iterator pointing to the last element of the found sequence, so we need to subtract the beginning of the vector to get the actual position. Classic C++ gotcha!
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Ciara
1 year ago
Wait, what? The code is trying to print the position of the found sequence, but it's using 'it?v.begin()' instead of 'it - v.begin()'. That's not going to work. I bet the output is going to be a bit... unexpected.
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Mose
1 year ago
Definitely, it's not going to work as intended.
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Daren
1 year ago
I'm guessing the output is going to be unexpected.
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Tyisha
1 year ago
Yeah, but it's using the wrong syntax for that.
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Allene
1 year ago
I think the code is trying to print the position of the found sequence.
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Yong
1 year ago
Okay, let's see. The code is using the 'find_end' function from the 'algorithm' library to search for the sequence {1, 3, 2} in the vector 'v'. Sounds good so far.
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Kenda
1 year ago
User1: Looks like our prediction was correct, the program did output: Found at position: 5
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Tijuana
1 year ago
User2: I agree, the sequence {1, 3, 2} is found at position 5 in the vector
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Huey
1 year ago
User1: I think the program will output: Found at position: 5
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Alberta
1 year ago
Hmm, I think this code is trying to find the last occurrence of the sequence {1, 3, 2} in the vector 'v'. If it finds it, it should print the position. Let me think this through...
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Marjory
1 year ago
User2: Program outputs: Found at position: 5
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Stephaine
1 year ago
User1: I think the code is looking for the sequence {1, 3, 2} in the vector.
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Michael
1 year ago
I'm not sure, but I think the answer might be D.
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Shelton
1 year ago
I disagree, I believe the answer is B.
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Toshia
1 year ago
I think the answer is A.
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