Swift Fallthrough Statement

In Swift, the switch statement generally executes only the matching block, and then execution come at the end of the switch statement. Unlike many other programming languages there is no need of break keyword to stop the execution. Look at the below general syntax of a switch statement in other programming languages –

Syntax:-

Here, the switch statement generally executes only the matching block, and then execution come at the end of the switch statement as soon as it find break keyword. But, if we omit the break keywords from the cases,then all of the subsequent cases after the matching case will be executed additionally. This execution of additional cases is termed as the “fall through” behavior of switch statement.

The switch statement in swift generally executes only the matching block, and then execution come at the end of the switch statement. Look at the below general syntax of a switch statement in swift –

Syntax:-

In Swift, the fallthrough keyword allows to execute all the following statements after a matching block found.

Switch without fallthrough

Example:-

Output:-

Switch with fallthrough

Example:-

Output:-