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What happens when you attempt to compile and run the following code?
#include
#include
#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;}
bool operator < ( const A & b) const { return a }; struct display { void operator() (const A & a) {cout << " " << a.getA();} }; struct add10 { void operator() (A & a) { a.setA(a.getA()+10) ;} }; int main() { int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 }; vector v1(t, t + 10); set s1(t, t + 10); for_each(v1.begin(), v1.end(), add10()); for_each(v1.begin(), v1.end(), display()); for_each(s1.begin(), s1.end(), add10()); for_each(s1.begin(), s1.end(), display()); return 0; }
Suggested Answer: D
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26 comments · newest first
RE
Ressie
1 month ago
I believe it should output C.
SH
Shaunna
2 months ago
Option B seems right to me.
XU
Xuan
2 months ago
I feel like there's a mistake in the code.
CH
Chantay
2 months ago
I think it will compile fine.
NA
Nathalie
2 months ago
No way, it's definitely option B. The add10 function works on the vector.
EM
Emmett
2 months ago
I believe it will output option C. The values will be updated.
LE
Leonor
2 months ago
I agree, the `this?>a` part seems wrong.
JO
Johnson
3 months ago
I think there's a compilation error. The syntax looks off.
BR
Brittani
3 months ago
I see a potential compilation error with "this?>a".
AJ
Aja
3 months ago
Option B seems right to me. Values increase by 10.
DA
Dana
3 months ago
I feel like there's a mistake in the code.
CR
Cristy
3 months ago
I think it will compile fine.
DI
Dick
3 months ago
The operator overloading is correct, but that typo is a killer!
LA
Lashawn
4 months ago
Nah, it should output the modified values after add10.
VE
Veronique
5 months ago
Wait, are you serious? I thought it would just run fine.
RO
Ronna
5 months ago
Definitely going with option D, that won't compile!
WI
Willodean
5 months ago
Looks like a compilation error due to the `this?>a` typo.
ST
Stephanie
6 months ago
The output should be option B if it runs correctly!
WI
Wilford
6 months ago
Wait, are you sure it won't compile?
XU
Xuan
6 months ago
I thought it would output the original numbers first, then the modified ones.
IL
Ilda
6 months ago
Totally agree, that syntax is wrong!
OR
Oretha
6 months ago
Looks like a compilation error due to the `this?>a` line.
DO
Doretha
6 months ago
I feel like the output should be option B, since we're adding 10 to each element in the vector, but I'm not completely confident about the set part.
GE
Genevive
7 months ago
I practiced a similar question where we had to modify a vector and then print it, but I can't recall if the set will reflect those changes too.
FR
Freeman
7 months ago
I remember something about how sets work with custom classes, but I'm not sure if they will actually store the modified values after using `add10`.
TA
Tamala
7 months ago
I think there might be a compilation error because of the `this?>a` line in the `setA` method. That doesn't look right.