The #if compiler directive is used to test a condition expression for conditional compilation.
If the conditional expression is true, source lines following the #if directive are selected to be read by the compiler. Otherwise, lines are excluded until the next #elseif, #else, or #endif in the same #if group are reached.
The syntax is as follows:
| Code Block |
|---|
#if defined(condition) |
or
| Code Block |
|---|
#if not defined(condition) |
Example:
| Code Block | ||
|---|---|---|
| ||
#if not defined(ranonce)
// this code will only run one time
// even if this source file is included more than once in a program, using pjs.include()
number = number + 1;
#endif
#define ranonce |
RPG Equivalent:
/IF