The expressions that evaluates to the integer value 3 are 7/2 and (int)(7.5/2).
In computer science, an integer is an integral data type, a data type that represents some finite subset of the mathematical integers. Integral data types can be of different sizes and may or may not be allowed to contain negative values. Integers are normally represented on a computer as a group of binary digits. The group size varies so the set of available integer sizes varies between different types of computers. Computer hardware almost always provides a way to represent a processor register or memory address as an integer.
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