#include <ESP8266WebServer.h>
#include <WiFiClient.h>
#include <ESP8266WiFi.h>

const char* ssid = "mathematics";
const char* password = "fzbyj8r7pdEk";

ESP8266WebServer server(7000);

String page = "";
String txt = "";

void setup() {

  delay(1000);
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.println("");

  // wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");  
  }
  Serial.print("connected to ");
  Serial.println(ssid);
  Serial.print("ip: ");
  Serial.println(WiFi.localIP());
    server.on("/", []() {
       page = "<h1>hi</h1>" + String(txt) + 1;
       server.send(200, "text/html", page);
    });

  server.begin();
  Serial.println("started");
}

void loop() {
  if (Serial.available() > 0) {
    String txt = Serial.readStringUntil('\n');
    Serial.println(txt);
    Serial.println(page);
 }
 
 server.handleClient();
 // Serial.println("ip: ");
 
}