Discuss C++ Institute CPP Exam Topic 1 Question 107

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, 0 };

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

map m;

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

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

}

m[0]="ten";

m.insert(pair(1,"eleven"));

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

cout<second<<" ";

}

return 0;

}

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

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

Cprogram outputs: zero eleven two three four five six seven eight nine

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

Eprogram outputs: 0 1 2 3 4 5 6 7 8 9

Suggested Answer: B

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36 comments · newest first

Corazon 10 months ago

Are you sure the output will be in that order? Sounds fishy.

Iluminada 10 months ago

Wait, why is "eleven" not showing up? Seems odd.

Elizabeth 10 months ago

The map will sort the keys, so the output order is based on the integers.

Cory 10 months ago

Definitely going with option A, that's the expected output!

Patria 11 months ago

I think it should output "ten" first since it's assigned to key 0.

Ling 11 months ago

I think the output will be the original strings, but I can't recall if "eleven" will show up or not.

Estrella 11 months ago

I feel like the output might include "ten" because of that line where it assigns m[0] = "ten", but I'm not completely certain.

Evelynn 11 months ago

I practiced a similar question where we had to output values from a map, and I remember it printed the keys in sorted order.

Bobbye 11 months ago

I think the code should compile fine, but I'm not sure about the output since I can't remember how the map iterates.

Dexter 12 months ago

This looks straightforward enough. I'll walk through the code step-by-step and make sure I understand how the map is being used. Then I can confidently select the right output option.

Beula 12 months ago

I'm a bit confused by the for loop at the end. Is it just iterating through the map and printing out the keys? I'll need to double-check how map iteration works.

Lawanda 12 months ago

Okay, I think I've got it. The program is first populating the map with the values from the two arrays, then updating the map to change the value for 0 to "ten" and adding a new key-value pair for 1. The output should reflect those changes.

Kenneth 1 year ago

Hmm, the key part seems to be how the map is being updated. I'll need to make sure I understand the difference between using the [] operator and the insert() method.

King 1 year ago

This looks like a tricky one. I'll need to carefully step through the code to understand what's happening with the map and array manipulations.

Gretchen 1 year ago

Wait, is this a trick question? I'm going to go with A. The program should output the original array of integers in their string form 'zero one two three four five six seven eight nine'.

Bette 1 year ago

Haha, I'm feeling lucky. I think the answer is E. The program will just output the original array of integers '0 1 2 3 4 5 6 7 8 9' without any string conversions.

Shawnda 1 year ago

↳ replying to Bette

User3

Lindsey 1 year ago

↳ replying to Bette

User2

Tricia 1 year ago

↳ replying to Bette

User1

Stefanie 1 year ago

This is a tricky one, but I'm betting on D. The program will output 'ten eleven two three four five six seven eight nine' because the 0th element was changed to 'ten' and a new element with key 1 was inserted as 'eleven'.

Pok 1 year ago

I'm going with C. The program will output 'zero eleven two three four five six seven eight nine' since the 0th element was changed to 'ten' and a new element with key 1 was inserted as 'eleven'.

Cecily 1 year ago

↳ replying to Pok

Yes, the output will be 'zero eleven two three four five six seven eight nine'.

Cecily 1 year ago

↳ replying to Pok

I agree, the program will output 'zero eleven two three four five six seven eight nine'.

Cecily 1 year ago

↳ replying to Pok

I think it will output 'zero eleven two three four five six seven eight nine'.

Annelle 1 year ago

I'm not sure, but I think the correct answer is A) program outputs: zero one two three four five six seven eight nine.

Barney 1 year ago

I believe the program will output: ten one two three four five six seven eight nine.

Annelle 1 year ago

I think the program will output: zero one two three four five six seven eight nine.

Marquetta 2 years ago

Hmm, I think the answer is B. The program should output 'ten one two three four five six seven eight nine' after modifying the value of the 0th element in the map.

Sharen 1 year ago

↳ replying to Marquetta

Actually, the correct answer is D. It will output 'ten eleven two three four five six seven eight nine'.

Katlyn 1 year ago

↳ replying to Marquetta

No, I think it will output 'zero one two three four five six seven eight nine'.

Azzie 1 year ago

↳ replying to Marquetta

I believe the program will output 'ten one two three four five six seven eight nine'.

Vivan 1 year ago

↳ replying to Marquetta

I think the answer is B.

Dewitt 1 year ago

↳ replying to Marquetta

Great, so the correct answer is B.

Lemuel 1 year ago

↳ replying to Marquetta

That's correct, the value of the 0th element in the map was modified to 'ten'.

Emerson 1 year ago

↳ replying to Marquetta

Yes, the program should output 'ten one two three four five six seven eight nine'.

Jamal 1 year ago

↳ replying to Marquetta

I think the answer is B.

C++ Institute CPP Exam - Topic 1 Question 107 Discussion