Part 3. Control Flow

Programs need to make choices.

10 items

Section	Title
1	`if` Expressions
2	`switch`
3	`while` Loops
4	`for` Loops
5	Labels and Block Expressions
6	`break` and `continue`
7	Inline Loops
8	Defer and Cleanup
9	Unreachable Code
10	Compile Errors as Safety Checks

Writes › Book › Zig › Part 3. Control Flow ›

`if` Expressions

Programs need to make choices.

Writes › Book › Zig › Part 3. Control Flow ›

`switch`

An if statement is good for general conditions:

Writes › Book › Zig › Part 3. Control Flow ›

`while` Loops

Programs often need to repeat work.

Writes › Book › Zig › Part 3. Control Flow ›

`for` Loops

A while loop repeats while a condition is true.

Writes › Book › Zig › Part 3. Control Flow ›

Labels and Block Expressions

Zig has blocks.

Writes › Book › Zig › Part 3. Control Flow ›

`break` and `continue`

Loops repeat code. But sometimes you do not want a loop to finish in the normal way.

Writes › Book › Zig › Part 3. Control Flow ›

Inline Loops

Zig has normal loops that run when the program runs.

Writes › Book › Zig › Part 3. Control Flow ›

Defer and Cleanup

Many programs need to clean something up after using it.

Writes › Book › Zig › Part 3. Control Flow ›

Unreachable Code

Some parts of a program should never run.

Writes › Book › Zig › Part 3. Control Flow ›

Compile Errors as Safety Checks

A compile error means Zig refused to build your program.