2.1 Overview
C requires explicit data typing for variables, arguments passed to a function, and a value returned from a function. The names for C data types occur in many other languages as well: int for signed integers, float for floating-point numbers, char for numeric values that serve as character codes, and so on. C programmers can define arbitrarily rich data types of their own such as Employee and Movie, which reduce ultimately to primitive types such as int and float. C’s built-in data types deliberately mirror machine-level ...
