qbasic.hlp (Topic list)
CALL Statement
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Transfers control to a SUB procedure.
 
[CALL] name [([argumentlist])]
 
    ■ name            The name of the SUB procedure to call.
    ■ argumentlist    The variables or constants to pass to the SUB
                      procedure. Separate multiple arguments with commas.
                      Specify array arguments with the array name followed
                      by empty parentheses.
 
    ■ If you omit the CALL keyword, also omit the parentheses around
      argumentlist. Either declare the procedure in a DECLARE statement
      before calling it, or save the program and QBasic automatically
      generates a DECLARE statement.
    ■ To specify an argument whose value will not be changed by the
      procedure, enclose the argument in parentheses.
 
Example:
    The program REMLINE.BAS illustrates calling SUB procedures. To view or
    run this program, load REMLINE.BAS using the Open command from the File
    menu.
 
See Also    CALL ABSOLUTE    DECLARE    SUB