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Blockchain CBDE Exam - Topic 5 Question 118 Discussion

Actual exam question for Blockchain's CBDE exam

Question #: 118
Topic #: 5

[All CBDE Questions]

To compare a String in Solidity you use:

Astring1 == string2

Bthe internal function 'str_compare(str1,str2)'

Cyou can't directly compare two strings, but one method would be to hash both strings and compare the hashes.

Dbytes32(string1) == bytes32(string2)

Show Suggested Answer

Suggested Answer: C

by Rosita at Oct 27, 2025, 03:23 AM

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Denny

3 months ago

I disagree, A should work in some cases too!

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Emogene

4 months ago

Wait, you can't compare strings directly? That's surprising!

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Dana

4 months ago

D is actually a common workaround, but not always reliable.

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Ashanti

4 months ago

I thought you could just use A? Seems easier.

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Julianna

4 months ago

C is the way to go, hashing is the best method!

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Shonda

4 months ago

Hashing strings? What is this, the 1980s? Real developers use the Force to compare strings.

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Rasheeda

5 months ago

B) sounds like it might work, but I've never heard of that "str_compare" function. Hashing is the way to go.

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Melinda

5 months ago

D) is interesting, but it's not the best solution. Hashing the strings is more reliable.

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Daniel

5 months ago

A) is just plain wrong. You can't compare strings like that in Solidity.

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Thea

5 months ago

C) is the correct answer. Comparing strings directly in Solidity is not possible, so hashing them and comparing the hashes is the way to go.

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Ceola

5 months ago

I thought we could compare strings directly with ==, but now I'm questioning if that's only for bytes.

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Herminia

5 months ago

I feel like I saw a practice question that mentioned hashing strings, which makes me lean towards C as well.

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Miss

6 months ago

C makes sense. Hashing avoids issues with string encoding.

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Mable

6 months ago

I prefer D. Converting to bytes32 seems straightforward.

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Daniel

6 months ago

I think it's C. Hashing is the way to go.

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Sanjuana

6 months ago

A is wrong, right? Direct comparison doesn't work.

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Viva

7 months ago

I remember something about using bytes32 for comparison, so could it be D? But I'm not entirely sure.

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Erick

7 months ago

I think you can't directly compare strings in Solidity, so maybe it's C? That sounds familiar.

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Laticia

7 months ago

I'm a bit confused on this one. I know there are some tricks to comparing strings in Solidity, but I can't recall the exact method. I'll have to review my notes before answering this.

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Lavera

7 months ago

Ah, I remember learning about this. I believe the correct answer is D - you can convert the strings to bytes32 and then compare them that way. Seems like a straightforward solution.

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Ben

7 months ago

Hmm, I'm not sure about this one. I know you can't directly compare strings, but I'm not confident which method is the best way to do it. I'll have to think this through carefully.

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Kina

8 months ago

I think the answer is C. Comparing strings directly can be tricky in Solidity, so hashing them and comparing the hashes is a good approach.

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Francisca

2 months ago

Definitely C, better for security and accuracy.

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Davida

3 months ago

I like option C as well, avoids pitfalls.

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Ronald

3 months ago

Direct comparison can lead to issues, hashing is the way!

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Jaime

3 months ago

I agree, hashing is safer for string comparison.

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Viola

6 months ago

C makes the most sense to me too.

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