由于C不允许一个含有这种表述的正确方案――C没有界定这种方案的行为,因此可能有所不同。 这使得汇编者在解释这些表述时具有广泛的自由度。
Java更严格地限制执行工作,界定了类似表达方式的预期行为。
(C中这种突破的一条规则是,未经中间顺序点,表达不得不止一次更改物体的价值。)
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