一般何种情况下定义常量?
新手提问,
常量和变量的值一样,也是存在内存中也是存在栈区吗?
为什么会有常量这种东西呢?反正都是存值,直接用变量代替它不久好了。
常量和变量运用的典型场合有哪些
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看名字就应该知道一些,一个是可以修改的,一个不能修改的
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关键在于 常量是全局的
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