我正在跟着这个
tutorial(
http://theocacao.com/document.page/234).我对这一段感到困惑,主要是与calloc有关的行：
We can also use a variation of the malloc function,called calloc. The calloc function takes two arguments,a value count and the base value size. It also clears the memory before returning a pointer,which is useful in avoiding unpredictable behavior and crashes in certain cases:
最后一幕让我感到困惑清除记忆是什么意思？
