From Jason Turner

[stmt.while]

C++17 → C++20 1.7 KB 39 lines
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tmp/tmp3d5wwi3i/{from.md → to.md} RENAMED
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  ### The `while` statement <a id="stmt.while">[[stmt.while]]</a>
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  In the `while` statement the substatement is executed repeatedly until
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- the value of the condition ([[stmt.select]]) becomes `false`. The test
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  takes place before each execution of the substatement.
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  When the condition of a `while` statement is a declaration, the scope of
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- the variable that is declared extends from its point of declaration (
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- [[basic.scope.pdecl]]) to the end of the `while` *statement*. A `while`
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- statement of the form
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- ``` cpp
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- while (T t = x) statement
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- ```
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-
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- is equivalent to
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-
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- ``` cpp
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- label:
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- { // start of condition scope
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- T t = x;
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- if (t) {
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  statement
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- goto label;
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- }
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- } // end of condition scope
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  ```
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- The variable created in a condition is destroyed and created with each
 
 
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  iteration of the loop.
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  [*Example 1*:
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  ``` cpp
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  once for the condition that succeeds and once for the condition that
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  fails.
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  — *end example*]
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  ### The `while` statement <a id="stmt.while">[[stmt.while]]</a>
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  In the `while` statement the substatement is executed repeatedly until
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+ the value of the condition [[stmt.select]] becomes `false`. The test
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  takes place before each execution of the substatement.
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  When the condition of a `while` statement is a declaration, the scope of
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+ the variable that is declared extends from its point of declaration
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+ [[basic.scope.pdecl]] to the end of the `while` *statement*. A `while`
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+ statement is equivalent to
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+ ``` bnf
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+ label ':'
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+ '{'
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+ if '(' condition ')' '{'
 
 
 
 
 
 
 
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  statement
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+ goto label ';'
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+ '}'
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+ '}'
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  ```
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+ [*Note 1*:
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+
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+ The variable created in the condition is destroyed and created with each
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  iteration of the loop.
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  [*Example 1*:
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  ``` cpp
 
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  once for the condition that succeeds and once for the condition that
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  fails.
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  — *end example*]
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+ — *end note*]
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+