[問題] free的使用方式
建立一條link list之後,在另外宣告一個指標,假設為ptr
然後我用ptr去指這條link list上某node,假設為中間點
之後當我用free(ptr)時,會產生甚麼效果?
是只有ptr指的那個node記憶體回收?
還是ptr之後的node都回收了?
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