Programming: Principles and Practice Using C++, 3rd Edition

1

Hello, World!

Programming is learned by writing programs.

– Brian Kernighan

Here, we present the simplest C++ program that actually does anything. The purpose of writing this program is to

• Let you try your programming environment

• Give you a first feel of how you can get a computer to do things for you

Thus, we present the notion of a program, the idea of translating a program from human-readable form to machine instructions using a compiler, and finally executing those machine instructions.

§1.1 Programs

§1.2 The classic first program

§1.3 Compilation

§1.4 Linking

§1.5 Programming environments

1.1 Programs

To get a computer to do something, you (or someone else) have to tell it exactly – in excruciating detail – what to do. Such a description ...