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C++ Institute Exam CPP Topic 8 Question 101 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 101
Topic #: 8
[All CPP Questions]

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

#include

#include

using namespace std;

template

class A {

T_v;

public:

A() {}

A(T v): _v(v){}

T getV() { return _v; }

void add(T & a);

void add(string & a);

};

template

void A::add(T & a) { _v+=a; }

void A::add(string & a) {

_v.insert(0, a);

}

int main()

{

Aa("Hello");

string s(" world!");

a.add(s);

cout << a.getV() <

return 0;

}

Show Suggested Answer Hide Answer
Suggested Answer: B

by Glory at Dec 04, 2024, 04:09 PM

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Precious
3 months ago
Wow, this guy must be a real code wizard to come up with something like this. I bet he's spending his weekends hacking the Pentagon or something.
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Man
3 months ago
I think there might be an issue with the way the template class is defined, causing a compilation error
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Dacia
3 months ago
Oh, I know this one! The program will display 'Hello world!' because the add() function for the string type concatenates the argument to the beginning of the string. Simple as that!
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Reena
2 months ago
That's correct! The string 'world!' will be added to the beginning of 'Hello'.
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Melissa
3 months ago
Yes, you're right! It will display 'Hello world!'
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Theola
3 months ago
But the code seems to be correct, why do you think it will result in a compilation error?
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Ressie
3 months ago
Bah, this is a piece of cake! The code will compile and run just fine. The output will be 'Hello world!', as expected.
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Man
3 months ago
I disagree, I believe the answer is B) compilation error
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Cathrine
3 months ago
Haha, I bet the person who wrote this code was trying to be too clever. But it looks like they got it right!
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Lyda
3 months ago
Definitely, the person who wrote this code knew what they were doing.
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Luis
3 months ago
I agree, the output should be Hello world!
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Rupert
3 months ago
Yeah, the code looks correct. It should work without any errors.
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Sheridan
3 months ago
I think the program will display: Hello world!
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Elina
4 months ago
The program will display 'Hello world!' because the add() function for the string type inserts the argument at the beginning of the string.
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Jaime
3 months ago
C) program will display: world!Hello
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Tricia
3 months ago
B) compilation error
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Julieta
3 months ago
A) program will display: Hello world!
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Theola
4 months ago
I think the answer is A) program will display: Hello world!
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