| .OPTION BASE Statement Details. |
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| OPTION BASE Statement Details |
|
| Syntax |
| OPTION BASE n |
| |
| The OPTION BASE statement is never required. It is used to change the |
| default lower bound for array subscripts. |
| |
| The value of n must be either 0 or 1. The default base is 0. If the |
| following statement |
| |
| OPTION BASE 1 |
| |
| is executed, the lowest value an array subscript can have is 1. |
| |
| Note: DIM statement provides an easier, more flexible way to control |
| the range of an array's subscripts. If the lower bound of an |
| array subscript is not explicitly set, then OPTION BASE can |
| be used to change the default lower bound to 1. |
| |
| The OPTION BASE statement can be used only once in a module (source file) |
| and can only appear in the module-level code. An OPTION BASE statement |
| must be used before any arrays are dimensioned. |
| |
| Chained programs may have an OPTION BASE statement if no arrays are passed |
| in COMMON between them or if the specified base is identical in the chained |
| programs. The chained-to program inherits the OPTION BASE value of the |
| chaining program if OPTION BASE is omitted in the latter. |
| |
