memcpy(derived,derived?,

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memcpy(derived,derived?,memcpy(derived,derived?,memcpy(derived,derived?,memcpy是C语言中的标准C库函数,函数原型是void

memcpy(derived,derived?,
memcpy(derived,derived?,

memcpy(derived,derived?,
memcpy是C语言中的标准C库函数,函数原型是void *memcpy(void *dest,const void *src,int n);功能是从源src所指的内存地址的起始位置开始拷贝n个字节到目标dest所指的内存地址的起始位置中,本memcpy(derived,derived?,10)是从源derived?所指的内存地址的起始位置开始拷贝10个字节到目标derived所指的内存地址的起始位置中.