C Functions

C is built on a foundation of functions--both those functions that you write and the func tions supplied by C. The next two sections should help you understand the nature of C functions.

Using Built-In Functions

Unlike just about every other programming language in the world, C has no input or out put statements. Look through Table 13.1 once more. You don't see a Print statement or anything else that might be considered an I/O statement.

C performs all its I/O through functions that your C compiler provides. By letting the compiler makers implement I/O in functions, the C language is highly portable , meaning that a C program that runs on one kind of computer should run on any other computer than is capable of running C programs. ...

Get Absolute Beginner's Guide to Programming, Second Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.