摘要: If the source and destination overlap, memcpy does not ensure that the original source bytes in the overlapping region are copied before being overwritten. Use memmove to handle overlapping regions
如果原始資料source和目的單元格destination（的地址）重復了。在重復區域的原始source的字節被覆蓋以前，memcpy不能保證這些區域被拷貝。使用memove來處理重復的區域。  閱讀全文