衡量程序员水平高低的一个硬指标，对sizeof用法的掌握，字节对齐，永远都是公司（包括华为等大公司）衡量C/C++程序员水平的一大指标，我的经历告诉我，完全掌握sizeof用法，字节对齐，面试时薪水多上1000-2000元不是问题。-To measure the level of the programmer of a rigid target, sizeof usage of the master, byte alignment, will always be companies (including Huawei and other large companies) to measure C/C++ programmers a major indicators of the level, my experience tells me that completely master sizeof usage, byte aligned, interview on the 1000-2000 multi-million salary is not a problem.