About
Welcome to C—one of the world’s most senior computer programming languages and, according to the Tiobe Index, the world’s most popular.1 You’re probably famil- iar with many of the powerful tasks computers perform. In this textbook, you’ll get intensive, hands-on experience writing C instructions that command computers to perform those and other tasks. Software (that is, the C instructions you write, which are also called code) controls hardware (that is, computers and related devices).