memcpy in cpp code example

Example 1: memcpy c++ usage

#include<cstring> // or string.h
int main(){
	char a[4],b[]={"hello"};
  	memcpy(a,b,strlen(b)*sizeof(char));//destination,source,size*sizeof(type)
  	
}

Example 2: memcpy library cpp

#include <cstring>