322i￡.else语句 语法为: if (booleanExpression) statement(s)-for-the-true-casei else statement(s)-for-the-false-casei3.2.2 if...else 语句 语法为： if (booleanExpression) { statement(s)-for-the-true-case; } else { statement(s)-for-the-false-case; }