Difference between revisions of "DEFSTR"

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* You can also use commas for specific undefined variable first letters.
 
* You can also use commas for specific undefined variable first letters.
 
* Variables [[DIM]]ensioned as another variable type or that use type suffixes are not defined otherwise.
 
* Variables [[DIM]]ensioned as another variable type or that use type suffixes are not defined otherwise.
* _DEFSTR sets the [[type]] of all variable names with the starting letter(s) or letter ranges  when encountered in the progression of the program(even in conditional statement blocks not executed and subsequent [[SUB]] procedures).  
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* DEFSTR sets the [[type]] of all variable names with the starting letter(s) or letter ranges  when encountered in the progression of the program(even in conditional statement blocks not executed and subsequent [[SUB]] procedures).  
 
* '''Qbasic's IDE may add DEF statements before any [[SUB]] or [[FUNCTION]]. QB64(like QB) will change all variable types in subsequent sub-procedures to that default variable type without giving a [[ERROR Codes|"Parameter Type Mismatch"]] warning or adding the proper DEF statement to subsequent procedures! If you do not want that to occur, either remove that DEF statement or add the proper DEF type statements to subsequent procedures. May also affect [[$INCLUDE]] procedures!'''
 
* '''Qbasic's IDE may add DEF statements before any [[SUB]] or [[FUNCTION]]. QB64(like QB) will change all variable types in subsequent sub-procedures to that default variable type without giving a [[ERROR Codes|"Parameter Type Mismatch"]] warning or adding the proper DEF statement to subsequent procedures! If you do not want that to occur, either remove that DEF statement or add the proper DEF type statements to subsequent procedures. May also affect [[$INCLUDE]] procedures!'''
  

Revision as of 08:06, 11 February 2013

The DEFSTR statement defines all designated undefined variables AS STRING variables instead of the SINGLE type default.


Syntax

DEFSTR letter[-range]


  • The variable starting letters can be from A-Z or any other range.
  • You can also use commas for specific undefined variable first letters.
  • Variables DIMensioned as another variable type or that use type suffixes are not defined otherwise.
  • DEFSTR sets the type of all variable names with the starting letter(s) or letter ranges when encountered in the progression of the program(even in conditional statement blocks not executed and subsequent SUB procedures).
  • Qbasic's IDE may add DEF statements before any SUB or FUNCTION. QB64(like QB) will change all variable types in subsequent sub-procedures to that default variable type without giving a "Parameter Type Mismatch" warning or adding the proper DEF statement to subsequent procedures! If you do not want that to occur, either remove that DEF statement or add the proper DEF type statements to subsequent procedures. May also affect $INCLUDE procedures!


Example: DEFSTR A-S, Z


See also:



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