Representation of Data

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چکیده

In contrast with higher-level programming languages, C does not provide strong abstractions for representing data. Indeed, while languages like Racket has a rich notion of data type—integers, floats, strings, tuples, lists, etc.—C has a low-level perspective on (primitive) data: a datum is either an integer or float of some finite size. While inconvenient at times, this perspective allows C programs to manipulate data in ways that are impossible in other languages. In turn, programmers are able to maximize performance, minimize space usage, perform other sorts of bit-level tricks, or otherwise have a better handle on precisely how data is represented in their programs. In order to take advantage of the benefits that systems programming offers, the programmer must understand these various representations and able to manipulate their data at this level. Because C breaks up data in two sorts, integers and floats, we study each in turn.

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تاریخ انتشار 2016