Memmove () function to avoid memory overlap

#include <iostream> #include <string.h>using namespace std;void* memmove (void *dst, const void *SRC, size_t Co UNT) {//Fault tolerant processing if (DST = = NULL | | src = = NULL) {return null;} unsigned char *pdst = (unsigned char *) dst;const unsigned char *psrc = (const unsigned char *) src;//determine if memory overlaps bool Flag1 = ( PDST >= psrc && pdst < PSRC + count), bool Flag2 = (psrc >= pdst && psrc < PDST + count); if (fl AG1 | | FLAG2) {//Reverse copy while (count) {* (PDST + count-1) = * (psrc + count-1); count--;} while}else{//copy while (count--) {*pdst = *psrc;pdst++;p src++;} While}return DST;}

Memmove () function to avoid memory overlap