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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

by Devora at Oct 08, 2023, 05:20 PM

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Fausto
19 days 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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Lawana
1 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
8 days ago
User4: There shouldn't be any runtime exceptions in this code.
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Floyd
16 days ago
User3: The program will compile without any issues.
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Eura
19 days ago
User2: I agree, it looks like the program will display '5'.
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Edwin
22 days ago
User1: I think the output will be '5'.
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Karan
1 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
2 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
18 days ago
A) program will display:5
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Tarra
1 months ago
C) program will compile
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Tesha
2 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
2 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
2 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.
upvoted 0 times
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