C语言 结构体内存对齐 结构体 typedef struct Test { char a1; int a2; char a3; short a4; }Test_T; 内存排布图如下 参考: https://blog.csdn.net/zhengnianli/article/details/87390212 https://blog.csdn.net/Scl_Diligent/article/details/80295446