Stepping Up To C++

Table 2 Grammar changes to allow declarations in conditionals

<B>                Old grammars (as in the ARM):</B>

selection-statement:
      if ( expression ) statement
      if ( expression ) statement else statement
      switch ( expression ) statement

iteration-statement:
      while ( expression ) statement
      do statement while ( expression ) ;
      for ( for-init-statement expressionopt ; expressionopt ) statement

<B>                New grammar (as in the draft):</B>

condition:
     expression
     type-specifier-seq declarator = assignment-expression

selection-statement:
      if ( condition ) statement
      if ( condition ) statement else statement
      switch ( condition ) statement

iteration-statement:
      while ( condition ) statement
      do statement while ( expression ) ;
      for ( for-init-statement conditionopt ; expressionopt ) statement