about data type in c#
int: identical with int 32, capacity,
Type Capacity Int16 -- (-32,768 to +32,767) Int32 (same with int) -- (-2,147,483,648 to +2,147,483,647) Int64 (identical with long, Signed 64-bit integer) -- (-9,223,372,036,854,775,808 to +9,223,372,036,854,775,807)
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