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

What is the output of the program?#include #include using namespace std;int main () {string s1 = "Hello", s2 = "World";s2 = s1 + s2;cout
B) It prints: HelloWorld
A) It prints: Hello
C) It prints: WorldHello
D) It prints: WorldHelloWorld

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

#include

using namespace std;

int main () {

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

s2 = s1 + s2;

cout << s2;

return 0;

}

Show Suggested Answer Hide Answer
Suggested Answer: B

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

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Francesco
28 days ago
So, B is the correct answer, right?
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Pedro
1 month ago
Exactly! "Hello" comes first.
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Carole
1 month ago
The output combines both strings.
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Francesco
1 month ago
I feel confused, but I agree with Carole.
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Pedro
2 months ago
Yeah, because s2 is assigned s1 + s2.
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Carole
2 months ago
I think it prints: HelloWorld.
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Sheridan
2 months ago
Just a simple string concatenation, nothing surprising here.
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Hillary
2 months ago
That's interesting, I didn't expect that output!
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My
2 months ago
Wait, are you sure? I thought it would be option C.
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Dustin
2 months ago
Totally agree, option B is correct!
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Gary
3 months ago
It prints: HelloWorld
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Mitzie
3 months 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
3 months 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
3 months 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
3 months ago
I think the output will be "HelloWorld" since s2 is assigned the value of s1 + s2.
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