Structured program theorem
Theorem about a certain class of control-flow graphs

In programming language theory, the structured program theorem, generally called the Böhm–Jacopini theorem, states that a class of control-flow graphs can compute any computable function using only the following three control structures to combine subprograms :SequenceExecuting one subprogram, and then another subprogram
SelectionExecuting one of two subprograms according to the value of a boolean expression
IterationRepeatedly executing a subprogram as long as a boolean expression is true
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This entry incorporates text from “Structured program theorem” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.