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(008) CubeIDE Implementation of USB Peripherals*
(017) C99 funciont and L-Value, R-Value
(018) C99 pointer*
(019) C99 With only value assignment*
(022) POSIX pthread multi-threads mutex*
(023) POSIX pthread multi-threads programming*
(027) C99 time and wait*
(028) High-precision calculation with GMP*
(029) Web Service Lib*
(030) International Components for Unicode (ICU)*
(031) Performance of C is higher than C++, because...*
函数的返回值空间就是右值。右值赋值给一个新的Label，新的Label直接指向这个返回值空间；右值赋值给一个旧的Label，C语言中进行的是值拷贝。