most fundamental data type in c#/c++/java

Notice the inversion —
* C# — Simple types like “int” are based on struct — by aliaing
* C — struct is based on primitives like “int” — by composition
* C++ — classes are based on the C struct

See Ignoring enum types for a moment, all c# value types are struct.

Now we are ready to answer the big Question
Q: beside pointers, what’s the most fundamental data type in this language?
A: C# — most fundamental type is the struct. Simple ints, classes and all other types (except enums) are built on top of struct.
A: Java/C++ — most fundamental types are primitives. In C++ all other types are derived using pointer and composition.
A: Once again, java emerges as the cleanest

Now we know why c# doesn’t call int a PRIMITIVE type because it’s not monolithic nor a truly fundamental type.


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