Do statement
A do statement is a loop construct that executes its body before testing a condition, so the body runs at least once.
Modern C, Third Edition
A do-while loop is a C iteration statement that executes its body once and then repeats it while its controlling condition is true.
- How it is used
- Deploys post-tested iteration when an operation must execute before deciding whether repetition should continue.
- How deep it goes
- Defines syntax and execution order, demonstrates a numerical loop, and stops short of deeper control-flow mechanics.
- Examples
- Demonstrates Heron's approximation for a multiplicative inverse using a precision threshold and repeated updates.
- What you can do after
- Apply it via C syntax to repeat a body at least once and terminate after a condition becomes false.
Modern C
A do-while loop is a C iteration construct that executes its dependent statement before testing whether its condition remains true.
- How it is used
- Uses post-condition iteration when an operation must occur before deciding whether repetition should continue.
- How deep it goes
- Defines syntax, contrasts do with while, and demonstrates a numerical rewrite without developing implementation internals.
- Examples
- Demonstrates do by rewriting Heron’s approximation for computing multiplicative inverses.
- What you can do after
- Apply via C syntax to place a continuation test after an iteration body.
Related concepts
- loopkind of · A loop is a programming control-flow construct that repeatedly executes a block of instructions according to an iteration rule or continuation condition.
- infinite loopproduces · An infinite loop is a control-flow cycle that continues without reaching a normal termination point unless an exit condition or external intervention stops it.
- type-generic macroused by · A type-generic macro is a macro-based interface whose expansion selects or adapts operations according to the types of its arguments or associated objects.
- do-while(false) trickimplemented by · The do-while(false) trick is a macro-structuring technique that encloses multiple statements in a single statement-like construct.
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