void*my_memmove(void*dst,constvoid*src,size_t count){assert(dst);assert(src);void*ret=dst;if((dst<src)||((char*)src+count)<(char*)dst)//内存不重叠,顺着按顺序拷贝{while(count--){*(char*)dst=*(char*)src;dst(char*)dstsrc(src}}else{dst=(char*)dst+count-1;src=(char*)src+c...