Data Types MCQs

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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++, what is sizeof(char)?

Always 8
Always 1, by definition
Depends on the compiler (1, 2, or 4)
2 on Unicode systems

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What does the C++ standard guarantee about the size of int?

Exactly 32 bits
The same size as a pointer
Exactly 4 bytes
At least 16 bits

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What is the minimum width that C++ guarantees for long long?

32 bits
The same width as long
64 bits
128 bits

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What does std::cout << true; print in C++ without std::boolalpha?

true
T
1
True

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In C and C++, is plain char signed or unsigned?

Implementation-defined
Always signed
Always unsigned
Signed in C, unsigned in C++

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In Java, how wide is the char type?

32 bits
8 bits
16 bits (a UTF-16 code unit)
Platform-dependent

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In VB6 (classic Visual Basic), what are the sizes of Integer and Long?

Integer is 16 bits; Long is 32 bits
Integer is 8 bits; Long is 16 bits
Integer is 32 bits; Long is 64 bits
Both are 32 bits

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In VB.NET, what is the value of CInt(True)?

-1
0
An error is raised
1

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When a variable is used without being declared and Option Explicit is off in VB6, what is its data type?

Variant
String
Object
Integer

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In Java, which of these is a primitive type?

String
boolean
Array
Integer

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