Chapter 1. Hello, Zig

The first program in Zig is small.

8 items

Section	Title
1	Hello, Zig
2	Build and Run
3	Variables and Constants
4	Printing Values
5	A Small Calculator
6	Reading Command-Line Arguments
7	A Word-Count Program
8	Exercises

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

Hello, Zig

The first program in Zig is small.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

Build and Run

There are two common ways to run a small Zig program.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

Variables and Constants

A program works with values. In Zig, values are usually stored in constants or variables.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

Printing Values

The function std.debug.print writes text.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

A Small Calculator

A program can compute a value before it prints it.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

Reading Command-Line Arguments

Programs often need input.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

A Word-Count Program

A useful program reads text and counts something.

Writes › Book › Learn › Learn Zig › Chapter 1. Hello, Zig ›

Exercises

The programs in this chapter are small. They are meant to be changed, broken, rebuilt, and studied.