Underflow Error: An underflow error occurs when a computer program or system tries to store a value that is too small (close to zero) for the available memory or data type.
Data Type:A data type defines the kind of values that can be stored and manipulated in a programming language. Different data types have different ranges and limitations.
Integer Overflow: Integer overflow specifically refers to an overflow error that occurs when trying to store an integer value outside the range defined by its data type.