Remote-processing CAMBASIC Instrukcja Użytkownika Pobierz pdf (Strona 140)

Commands - 107

RESUME

Statement

SYNTAX: RESUME

RESUME NEXT

RESUME line

PURPOSE: To continue program execution after an error recovery procedure has been performed.

REMARK S: If NEXT is not declared, the main program will resume operation by re-executing the statement that

originally caused the error. Every err or– handling routine must eventually end either by executing a

RESUME statement or by terminating the program.

If NEXT is specified, execution resumes at the statement immediately following the one which

caused the error.

When an error trap occurs, it has the effect of disabling the ON ERR GOTO statement that enabled

the trap. Any further error occurring prior to the execution of another ON E RR GOT O statement

will cause the termination of the program. An ON E RR GOT O statement may be included at the

end of the error– handling routine to maintain the error trap enabled.

Error traps may be nested in the same manner as GOSUBs and function calls, and the error routine

may begin with an ON ERR GOTO statement, with its own error– handling routine. Each

error– handling r outine must be term inated with a RESUME statement.

NOTE: You cannot use program labels with RESUME.

Make sure you re-declare error handling using ON ERR. When the error routine is executed, the

previous ON ERR is disabled.

Consider using EXIT CLEAR in an error handling routine. This will clear loop stacks and

subroutines. You can then start at the beginning of your program.

RELATED: ON ERR

ERROR: < RESUM E w/o ON/ ERR> – if no corresponding error condition

< Can’t compile> – if line does not exist

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 207 208

Brak uwag

Remote-processing CAMBASIC Instrukcja Użytkownika Strona 140