how to print x number of bytes cout code example

Example: how to print x number of bytes cout

#include <iostream>
#include <cstring>

#define x 4

int main()
{
  const char* str = "1234567890";
  char temp[x+1] = {0};
  
  std::memcopy(temp, str, x);
  
  std::cout << temp << std::endl;
  
  return 0;
}