#pragma pack(1)

#pragma pack(1)是一种编译指令，用于调整结构体的边界对齐方式，使结构体按照1字节方式对齐。这样可以节约内存资源，但会在效率上有所影响。在某些情况下，比如基于协议的程序，严格按照规则接收数据包时，需要使用#pragma pack(1)来确保数据在内存中是连续的，以便更方便地处理数据。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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