Back to Carbon Lang

Control flow

docs/design/control_flow/README.md

0.0.0-0.nightly.2026.05.07943 B
Original Source

Control flow

<!-- Part of the Carbon Language project, under the Apache License v2.0 with LLVM Exceptions. See /LICENSE for license information. SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -->

Overview

Blocks of statements are generally executed linearly. However, statements are the primary place where this flow of execution can be controlled.

Carbon's flow control statements are:

  • if and else provides conditional execution of statements.
  • Loops:
    • while executes the loop body for as long as the loop expression returns True.
    • for iterates over an object, such as elements in an array.
    • break exits loops.
    • continue goes to the next iteration of a loop.
  • return ends the flow of execution within a function, returning it to the caller.