Characters & Strings MCQs

12 MCQs — Data Types MCQs (Page 1 of 2)

Practice Characters & Strings MCQs with correct answers and explanations. These questions are from the Data Types MCQs section.

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Data Types Subcategories

Arrays & Memory Layout	Characters & Strings
Floating Point	Integer Representation & Overflow
Number Systems & Literals	Pointers & References
Primitive Types & Sizes	Python Built-in Types
Structures, Unions & Enums	Type Conversion & Casting
Typing Disciplines & ADTs

In C, how many bytes does the string literal "hello" occupy, and what does strlen return for it?

sizeof is 6; strlen is 5
sizeof is 5; strlen is 6
Both are 5
Both are 6

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What happens with char s[5] = "hello"; in C++?

It compiles, and s has no null terminator
Compilation error (the initializer is too long)
s holds "hell"
It compiles and is null-terminated

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What are the ASCII codes of '0', 'A', and 'a'?

30, 41, 61
48, 97, 65
0, 65, 97
48, 65, 97

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What happens with s = "abc"; s[0] = "z" in Python?

s becomes "z"
IndexError
s becomes "zbc"
TypeError: 'str' object does not support item assignment

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What does this Python code print? s = "abc" s.upper() print(s)

abc
ABC
None
Abc

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What is "ab" * 3 in Python?

["ab", "ab", "ab"]
"ababab"
"ab3"
TypeError

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In C, given char a[] = "hi", b[] = "hi";, what does a == b evaluate to?

Undefined behavior
Compilation error
False (0), because the comparison is between the two array addresses
True (1)

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What does "abc"[1:10] evaluate to in Python?

"bc"
IndexError
"abc"
"b"

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What is the result of sorted(["b", "B", "a", "A"]) in Python?

['a', 'A', 'b', 'B']
['A', 'B', 'a', 'b']
['a', 'b', 'A', 'B']
['A', 'a', 'B', 'b']

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In Python 3, what are len("😊") and len("😊".encode('utf-8'))?

1 and 4
2 and 2
4 and 4
1 and 1

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