wmemmove() function in c++

// c++ program to demonstrate
// example of wmemmove() function.
#include <bits/stdc++.h> 
using namespace std; 

int main() 
{ 
  
    // Maximum length of the destination string 
    wchar_t* dest_buf=L"A computer 
                     science portal for geeks";
    wchar_t dest[wcslen(dest_buf)+1];
  
    // Maximum length of the source string
    wchar_t* src_buf=L"geeksforgeeks";
    wchar_t src[wcslen(src_buf)+1]; 
    
    // Initialize the destination string 
    wcscpy(dest,dest_buf); 
  
    wprintf(L"Destination: %ls\n", dest); 
  
    // Initialize the source string 
    wcscpy(src,src_buf ); 
  
    wprintf(L"Source: %ls\n", src); 
    wmemmove(dest+2, src+3, 5); 
    wprintf(L"After modification, destination: 
                                   %ls\n", dest); 
    return 0; 
}