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Which changes introduced independently will allow code to compile and display 0 1 8 9 (choose all that apply)
#include
#include
#include
using namespace std;
class A {
int a;
public:
A(int a):a(a){}
int getA() const { return a;}
/* Insert Code Here 1 */
};
/* Insert Code Here 2 */
int main(){
A t[] ={ 3, 4, 2, 1, 6, 5, 7, 9, 8, 0 };
vectorv(t, t+10);
s1.insert(v.begin(),v.end());
s1.erase(s1.lower_bound(2),s1.upper_bound(7));
for(set::iterator i=s1.begin();i!= s1.end(); i++) {
cout<
}
cout< return 0; }
Suggested Answer: A, B, D
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18 comments · newest first
KE
Keneth
9 months ago
I agree, D is essential for the set to work properly.
RU
Ruth
9 months ago
Wait, why do we need D? That seems odd.
VI
Vivan
9 months ago
C seems wrong, it flips the comparison.
RE
Rebeca
10 months ago
I think B is the right choice too!
CO
Corrinne
11 months ago
A is definitely needed for the output.
LO
Louann
11 months ago
I believe option D is also important because it defines the comparison for the set, but I can't recall if it needs to be at Place 2 specifically.
KA
Karon
11 months ago
I'm a bit confused about option C. It seems like it could work, but I feel like it might not give the correct order for the set.
GE
Gerald
11 months ago
I remember practicing a similar question where we had to define comparison operators for a custom class. I think option B is definitely correct.
RU
Rusty
12 months ago
I think option A is necessary for the code to compile, but I'm not entirely sure if it's the only one needed.
TE
Teri
12 months ago
I've got a strategy for this. I'll start by looking at the options that involve overloading the `<` operator, since that's what the `set` container uses to sort its elements. Then I'll consider how the different implementations would affect the sorting and insertion of the `A` objects.
DA
Dante
12 months ago
Okay, let's see. I think the key here is to understand how the `set` container works and what it requires for the elements to be properly sorted. I'll need to carefully evaluate each of the options and how they would impact the comparison and insertion of the `A` objects.
AN
Anglea
1 year ago
Hmm, I'm a bit confused by this question. I'm not sure which changes would allow the code to compile and display the expected output. I'll need to review the operator overloading concepts and think through how they might affect the set operations.
TE
Tequila
1 year ago
This question is testing our understanding of operator overloading and how it affects the behavior of the `set` container. I think I need to carefully consider the different options and how they would impact the sorting and insertion of the `A` objects into the `set`.
JA
Jarvis
1 year ago
I think option B is the correct answer. Defining the less-than operator to compare the 'a' member of the A class will allow the set to properly order the elements.
SC
Scarlet
10 months ago
I think option A is also needed for proper output.
KR
Kristofer
10 months ago
But what about option D? It could work too.
ER
Ernestine
10 months ago
Yeah, without A, it won't compile correctly.
CI
Ciara
11 months ago
I agree, option B is essential for ordering.