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Labels

Documentation

Defines a location in a program.

Syntax



symbolname :

or

literalnumber

Description

A label can define a place in a program where Goto or GoSub can jump to.
A label can also mark Data blocks, allowing Restore to change the Read sequence.

A label can be a positive integer line number or a symbolname. In both cases, the label must start at the first column of line. A symbolname label must end with a colon (:) character.

Example

'' Compile with -lang fblite or qb



#lang "fblite"



beginning:

3 Print "Hello World!"

Goto beginning

'' compile with -lang qb



'$lang: "qb"



'' Labels can be used to "bookmark" DATA blocks, allowing RESTORE to alter the READ sequence.

Read a,b,c

Restore here

Read d,e

Print a,b,c,d,e 



Data 1,2,3,4,5

here:

Data 6,7,8

Output:

1,2,3,6,7

Dialect Differences

Line numbers with decimals is available only in the -lang qb dialect.

Differences from QB

None if compiled in the -lang qb dialect.