Block (programming): Difference between revisions

Revision as of 14:38, 15 March 2019

Revision as of 19:29, 11 September 2019

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Blocks use different syntax in different languages. Two broad families are:

* the [[ALGOL]] family in which blocks are delimited by the keywords "<code>begin</code>" and "<code>end</code>" or equivalent. In [[C (programming language)|C]], blocks are delimited by curly braces - "<code>{</code>" and "<code>}</code>". [[ALGOL 68]] uses parentheses.

* the [[C (programming language)|C]] family in which blocks are delimited by curly bracesParentheses - "<code>{(</code>" and "<code>})</code>", are used in the MS-DOS [[batch language]]

Some other techniques used are as follows :

* parentheses - "<code>(</code>" and "<code>)</code>", as in [[batch language]] and [[ALGOL 68]].

* [[off-side rule|indentation]], as in [[Python (programming language)|Python]]

* [[s-expression]]s with a syntactic keyword such as <code>lambda</code> or <code>let</code> (as in the [[Lisp (programming language)|Lisp]] family)