C++ Institute CPA-21-02 Exam - Topic 7 Question 56 Discussion

Actual exam question for C++ Institute's CPA-21-02 exam

Question #: 56
Topic #: 7

[All CPA-21-02 Questions]

What is the output of the program?

#include

using namespace std;

int main () {

string s1 = "Hello", s2 = "World";

s2 = s1 + s2;

cout << s2;

return 0;

}

AIt prints: Hello

BIt prints: HelloWorld

CIt prints: WorldHello

DIt prints: WorldHelloWorld

Show Suggested Answer

Suggested Answer: B

by Lindsey at Jun 23, 2026, 12:39 AM

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Sheridan

5 days ago

Just a simple string concatenation, nothing surprising here.

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Hillary

10 days ago

That's interesting, I didn't expect that output!

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My

15 days ago

Wait, are you sure? I thought it would be option C.

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Dustin

20 days ago

Totally agree, option B is correct!

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Gary

25 days ago

It prints: HelloWorld

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Mitzie

1 month ago

I practiced a question like this before, and I believe it concatenates the strings in the order they are written, so it should be "HelloWorld".

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Cassie

1 month ago

I feel like it could be "WorldHello" because s2 was originally "World" and then modified, but I’m confused about the order.

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Jame

1 month ago

I'm not entirely sure, but I remember something similar where string concatenation was involved. I think it might be option B.

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Stanford

2 months ago

I think the output will be "HelloWorld" since s2 is assigned the value of s1 + s2.

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