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C++ Institute Exam CPP Topic 4 Question 72 Discussion

Actual exam question for C++ Institute's CPP exam
Question #: 72
Topic #: 4
[All CPP Questions]

What happens when you attempt to compile and run the following code? Choose all possible answers.

#include

using namespace std;

class C {

public:

int _c;

C():_c(0){}

C(int c) { _c = c;}

C operator+=(C & b) {

C tmp; tmp._c = _c+b._c;

return tmp;

} };

ostream & operator<<(ostream & c, const C & v) {

c<

template

class A {

T_v;

public:

A() {}

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

T getV() { return _v; }

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

};

int main()

{

A b(2);

Aa (5);

a.add(C());

cout << a.getV() <

return 0;

}

Show Suggested Answer Hide Answer
Suggested Answer: E

Contribute your Thoughts:

Detra
5 days ago
This looks like a tricky C++ question. I'll need to carefully read through the code and think about the operator overloading and template usage.
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Salena
5 days ago
I'm a bit confused by the `operator+=` overload for the `C` class. Does that mean the `add` function in the `A` class will work with `C` objects?
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Kimi
5 days ago
Hmm, I think the program will compile, but I'm not sure what the output will be. I'll need to walk through the code step-by-step to figure out the behavior.
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Louvenia
7 days ago
The number of concurrent users seems like it could be relevant, but I'm not sure how that would directly impact the Extract processes. I'll have to consider that further.
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Brande
8 days ago
Okay, I've got this. Dynamic threat analysis (DTA) is the best description for how container images are dynamically analyzed before deployment.
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Ira
10 days ago
Hmm, I'm a bit unsure about this one. I know lower interest rates usually encourage more spending, but I'm not sure if that's the "most likely" consequence. Let me think this through.
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Phillip
15 days ago
Honestly, I'm torn between A and C. I just hope I can remember what I practiced on this topic!
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Fausto
5 months ago
I'm going to go with option C - the program will compile. The code looks well-written, and the template class A seems to be handling the addition of the C objects correctly.
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Jesusa
4 months ago
Yes, it looks like the program will compile successfully.
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Elenore
4 months ago
I agree, the code seems to be structured properly for compilation.
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Amie
4 months ago
I think option C is correct. The program should compile without any issues.
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Lawana
5 months ago
Haha, this is an interesting one! I bet the output will be something like '5', but I'm curious to see if there's any hidden surprises in the code that could cause a runtime exception.
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Roy
4 months ago
User4: There shouldn't be any runtime exceptions in this code.
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Floyd
5 months ago
User3: The program will compile without any issues.
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Eura
5 months ago
User2: I agree, it looks like the program will display '5'.
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Edwin
5 months ago
User1: I think the output will be '5'.
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Karan
6 months ago
This code looks a bit complex, but I think it will compile and run without any issues. The += operator overload for the C class seems to be working correctly.
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Mertie
6 months ago
The program will compile and run, but I'm not sure about the output. The default constructor for C adds 0 to the member variable _c, so I'm curious to see what the final value will be.
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Tarra
5 months ago
A) program will display:5
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Tarra
5 months ago
C) program will compile
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Tesha
6 months ago
I'm not sure. I think the program will cause a runtime exception because there might be an issue with the way the operator+= is implemented in class C.
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Ciara
6 months ago
I agree with Jeniffer. The program should compile and run without any issues since the operator+= is defined for class C.
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Jeniffer
6 months ago
I think the program will display:5 because the code seems to be adding a default constructed object of class C to the object a.
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