1 1 4.2.4 Else 1 ---------- 1 1 The '#else' directive can be added to a conditional to provide 1 alternative text to be used if the condition fails. This is what it 1 looks like: 1 1 #if EXPRESSION 1 TEXT-IF-TRUE 1 #else /* Not EXPRESSION */ 1 TEXT-IF-FALSE 1 #endif /* Not EXPRESSION */ 1 1 If EXPRESSION is nonzero, the TEXT-IF-TRUE is included and the 1 TEXT-IF-FALSE is skipped. If EXPRESSION is zero, the opposite happens. 1 1 You can use '#else' with '#ifdef' and '#ifndef', too. 1