void*memcpy(void*dst,constvoid*src,size_t count){void*ret=dst;assert(dst);assert(src);/* copy from lower addresses to higher addresses */while(count--){*(char*)dst=*(char*)src;dst=(char*)dst+1;src=(char*)src+1;}returnret;}
#include<stdio.h>#include<string.h>intmain(){charbuffer1[]="DWgaOtP12df0";charbuffer2[]="DWGAOTP12DF0";intn;n=memcmp(buffer1,buffer2,sizeof(buffer1));if(n>0)printf("'%s' is greater than '%s'.\n",buffer1,buffer2);elseif(n<0)printf("'%s' is less than '%s'.\n",buffer1,buffer2);elseprintf("'%s' is the same as '%s'.\n",buffer1,buffer2);return0;}
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