Control flow: Difference between revisions

Revision as of 13:52, 13 July 2024

Revision as of 03:11, 24 July 2024

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=== If-then-(else) statements ===

{{main article|Conditional (computer programming)}}

Conditional expressions and conditional constructs are features of a [[programming language]] whichthat perform different computations or actions depending on whether a programmer-specified [[booleanBoolean datatypedata type|booleanBoolean]] ''condition'' evaluates to true or false.

* <code>IF..GOTO</code>. A form found in unstructured languages, mimicking a typical machine code instruction, would jump to (GOTO) a label or line number when the condition was met.

* <code>IF..THEN..(ENDIF)</code>. Rather than being restricted to a jump, any simple statement, or nested block, could follow the THEN key keyword. This a structured form.