Discuss C++ Institute CPP Exam Topic 2 Question 116

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

#include

using namespace std;

int main(){

int second[] ={ 3, 4, 2, 1, 6, 5, 7, 9, 8, 10 };

string first[] = {"three", "four", "two", "one", "six","five", "seven", "nine","eight"," ten"};

map m;

for(int i=0; i<10; i++) {

m.insert(pair(second[i],first[i]));

}

if (m[11] == "eleven") {

cout<<"eleven ";

}

for(map::iterator i=m.begin();i!= m.end(); i++) {

cout<second<<" ";

}

cout<

return 0;

}

Aprogram outputs: one two three four five six seven eight nine ten 11

Bprogram outputs: one two three four five six seven eight nine ten 10

Cprogram outputs: one two three four five six seven eight nine ten 10

Dprogram outputs: eleven one two three four five six seven eight nine ten 10

Eruntime exception

Suggested Answer: A

Get Premium CPP Questions as Interactive Web-Based Practice Test or PDF Real Exam Format Detailed Explanations Instant Access Get Your Practice Test

30 comments · newest first

Louis 6 months ago

Definitely a runtime exception due to the missing key.

Odette 6 months ago

I believe it outputs the numbers and size, but no eleven.

Roy 6 months ago

I feel like it will just print the size at the end.

Lilli 7 months ago

It should output the numbers in order, but not eleven.

Azalee 7 months ago

I agree, accessing m[11] is risky.

Alise 7 months ago

I think it will throw a runtime exception.

Rebecka 8 months ago

The last output should be 10, not 11!

Alishia 8 months ago

Totally agree, it should just output the numbers.

Dona 8 months ago

Wait, why would it output "eleven"?

Afton 8 months ago

I think it will throw a runtime exception.

Hyman 8 months ago

The map will have 10 elements.

Marguerita 8 months ago

I'm going with Option D. The program will output "eleven one two three four five six seven eight nine ten 10" because the map will attempt to access an element with key 11, which is not present in the map, and the default value for that key will be "eleven".

Lavonna 9 months ago

Option E is the correct answer. The program will throw a runtime exception because the map will attempt to access an element with key 11, which is not present in the map.

Eden 9 months ago

Option D is correct. The program will output "eleven one two three four five six seven eight nine ten 10" because the map will attempt to access an element with key 11, which is not present in the map, and the default value for that key will be "eleven".

Viva 9 months ago

I practiced a similar question, and I think the output will include the size of the map at the end, but I can't recall the exact values.

Alica 9 months ago

I'm leaning towards option B or C. The output seems to be printing the values in the map, and the size of the map is 10, so that makes sense to me.

Wendell 9 months ago

I think the key here is understanding how the map data structure works. If the index 11 doesn't exist, it might throw a runtime exception. I'll need to double-check that.

Carmela 10 months ago

Okay, let me break this down. The code is creating two parallel arrays, then inserting the key-value pairs into a map. The last part is checking for a specific value at index 11, which seems odd.

Ivan 10 months ago

The loop for printing the map seems off. I feel like there’s a typo with `i?>second`.

Britt 10 months ago

The program will output "eleven one two three four five six seven eight nine ten 10" because the map will attempt to access an element with key 11, which is not present in the map, and the default value for that key will be "eleven".

Margot 10 months ago

I remember something about accessing a non-existent key in a map. Could it throw an exception?

Jerry 10 months ago

I think the map will insert the pairs correctly, but I'm not sure about the output after that.

Paola 11 months ago

Haha, the programmer must have been a bit too ambitious with that map. Trying to access a key that's not even in the map? That's a recipe for a runtime exception, if you ask me.

Tonja 11 months ago

Hmm, I'm a bit confused about the `m[11]` part. Does that mean it's trying to access an index that doesn't exist in the map?

Teddy 11 months ago

This looks like a tricky one. I'll need to carefully read through the code and think through the logic step-by-step.

Charlesetta 5 months ago

↳ replying to Teddy

I'm leaning towards option E as well.

Bernadine 5 months ago

↳ replying to Teddy

I think it will output the size of the map.

Cristy 6 months ago

↳ replying to Teddy

The map might not have the key 11.

Lucy 6 months ago

↳ replying to Teddy

I see a potential runtime exception.

Lenny 6 months ago

↳ replying to Teddy

This code seems complex.

C++ Institute CPP Exam - Topic 2 Question 116 Discussion