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C++ Institute CPA-21-02 Exam - Topic 5 Question 20 Discussion

Actual exam question for C++ Institute's CPA-21-02 exam
Question #: 20
Topic #: 5
[All CPA-21-02 Questions]

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

#include

using namespace std;

#define A 1

int main()

{

#if A

cout<<"Hello";

#endif

cout<<"world";

return 0;

}

Show Suggested Answer Hide Answer
Suggested Answer: C

by Zoila at Jul 05, 2024, 07:26 PM

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Roxane
5 months ago
Nah, it's definitely not just "world".
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Luann
5 months ago
Wait, are you sure about that? Sounds off.
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Barney
6 months ago
Definitely prints: Helloworld!
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Beth
6 months ago
I think it should just print: Hello.
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Shad
6 months ago
It will print: Helloworld
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Jennifer
6 months ago
I feel like the output should be "Hello" and then "world", but I'm confused about how the preprocessor works in this case.
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Rikki
7 months ago
I practiced a similar question where `#if` was used, and it printed both parts. So, I guess it should print "Helloworld".
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Lennie
7 months ago
I'm not entirely sure, but I remember something about preprocessor directives. Maybe it will just print "world" if the condition isn't met?
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Matthew
7 months ago
I think the `#if A` directive will evaluate to true since A is defined as 1, so it should print "Hello" and "world".
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Ardella
7 months ago
I'm not sure about this one. The preprocessor directives can be tricky, and I don't want to overthink it. I'll just try to reason through it logically.
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Tiffiny
7 months ago
Hmm, I'm a bit confused about how the #if directive works with the A macro. I'll need to think this through carefully.
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Denny
7 months ago
This looks like a pretty straightforward preprocessor directive question. I'm pretty confident I can figure this out.
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Scarlet
7 months ago
Okay, let's break this down step-by-step. The #if A directive will evaluate to true since A is defined as 1, so the "Hello" message will be printed. Then the "world" message will always be printed, regardless of the #if condition.
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Yun
7 months ago
Hmm, I'm a bit confused about the different options. I'll need to carefully consider the costs and data segregation aspects.
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Mattie
12 months ago
The correct answer is definitely B) It will print: Hello. I mean, come on, it's a simple preprocessor directive. How could anyone get that wrong?
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Stefan
12 months ago
Hmm, I'm not sure. Maybe D) It will print: 0? That would be a pretty funny outcome if the code just returned 0 instead of actually printing anything.
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Marguerita
10 months ago
User4: User3 is correct. It will print: world
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Martina
11 months ago
User3: I think it will print: world
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Twila
11 months ago
User2: User1 is correct. It will print: Hello
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Dottie
11 months ago
User1: It will print: Hello
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Ashanti
1 year ago
I think the answer is A) It will print: Helloworld. The preprocessor will include the 'Hello' message, and then the 'world' message will be printed right after it.
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Gerry
11 months ago
User 3: And then the 'world' message will be printed right after it.
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Raelene
11 months ago
User 2: Correct, the preprocessor will include the 'Hello' message.
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Lemuel
12 months ago
User 1: I think the answer is A) It will print: Helloworld.
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Paz
1 year ago
I think the answer is C because the preprocessor directive #if A evaluates to true since A is defined as 1.
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Antione
1 year ago
The answer is B) It will print: Hello. The #if preprocessor directive will evaluate A to be true, and so the 'Hello' message will be printed, followed by the 'world' message.
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Carolynn
11 months ago
Oh, I see. Thanks for clarifying!
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Davida
11 months ago
Actually, it will print: Hello
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Heike
11 months ago
No, it will print: Helloworld
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Lenita
12 months ago
Yes, because the #if directive will evaluate A to be true
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Lenita
12 months ago
I think it will print: Hello
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Chaya
12 months ago
I think it will print: Hello
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Charlette
1 year ago
I believe the answer is B.
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Martha
1 year ago
I think the answer is A.
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