About String(char array) and Terminal on Arduino and Blynk

[gaosongChina]

Thanks,@Costas . it is
i want to achieve a function :inputing something by Terminal,and showing by LCD
so converting format is improper
and i find something:
code:

WidgetTerminal terminal(V0);
char *pinValueV0 = "";
BLYNK_WRITE(V0)
{
  menu_redraw_required = 1;
  pinValueV0 = param.asStr();
  Serial.println("param.asStr()=");
  Serial.println(param.asStr());
  Serial.println("pinValueV0[WRITEV]=");
  Serial.println(pinValueV0);
}
void loop()
{
  if (  menu_redraw_required != 0 ) {
      Serial.println("pinValueV0[LOOP]=");
      Serial.println(pinValueV0);
    menu_redraw_required = 0;
  }

  Blynk.run();
}

then i input “hi” and get it in serial monitor: