DefLng start_letter[-end_letter ][, ...]

start_letter
end_letter

DefLng specifies that variables and arrays which aren't declared with a data type - or not declared at all - are implicitly declared of type Long if the first letter of their names matches a certain letter or lies within an inclusive range of letters.

This will make lNumber a Long integer number since it starts with l.

'' Compile with -lang fblite or qb

#lang "fblite"

DefLng l
Dim lNumber ' implicit: As Long

Print Len(lNumber) ' Displays 4, the number of bytes in a long.

• Only available in the -lang qb and -lang fblite dialects.
  
  

• None
  
  

• DefInt
  
• Defulongint
  
• Dim
  
• LongInt