Problemas_De_Aspas

#include <SPI.h>
#include <Ethernet.h>
boolean incoming = 0;
int pin_rly6 = 6;
int pin_rly7 = 7;
int pin_rlya1 = A1;
int pin_rlya2 = A2;
byte mac[] = {0xDC, 0x0E, 0xA1, 0xC6, 0x8D, 0x29};
IPAddress ip(192, 168, 88, 177);
EthernetServer server(80);
void setup()
{
  ////////// define as portas que serão usadas e quais as funções entradas / imput ou saidas output //////////
  Ethernet.begin(mac, ip);
  server.begin();
  Serial.begin(9600);
  pinMode(pin_rly6, OUTPUT); // saida porta 6 //
  pinMode(pin_rly7, OUTPUT); // saida porta 7 //
  pinMode(pin_rlya1, OUTPUT); // saida porta A1 //
  pinMode(pin_rlya2, OUTPUT); // saida porta A2 //
}
void loop()
{
  EthernetClient client = server.available();
  if (client)
  {
    boolean currentLineIsBlank = true;
    String str;
    while (client.connected())
    {
      if (client.available())
      {
        char c = client.read();
        str.concat(c);
        ////// SE o final do condigo do ip 192.168.88.177 for igual a 192.168.88.177/7on então o codigo abaixo liga o pino 7 //////
        if (str.endsWith(" / 7on")) {
          digitalWrite(pin_rly7, HIGH)
          ;
        }
        ////// Caso contrario se o final do condigo do ip 192.168.88.177 for igual a 192.168.88.177/7off então o codigo abaixo desliga o pino 7 //////
        else if (str.endsWith(" / 7off")) {
          digitalWrite(pin_rly7, LOW)
          ;
        }
        ////// SE o final do condigo do ip 192.168.88.177 for igual a 192.168.88.177/6on então o codigo abaixo liga o pino 6 //////
        // pino 6 sala 2 //
        if (str.endsWith(" / 6on")) {
          digitalWrite(pin_rly6, HIGH)
          ;
        }
        // Pino A2 portão de cima //
        if (str.endsWith(" / a2on")) {
          digitalWrite(pin_rlya2, HIGH);
          delay(120);
          digitalWrite(pin_rlya2, LOW);
        }
        // Pino A2 portão de cima //
        if (str.endsWith(" / a1on")) {
          digitalWrite(pin_rlya1, HIGH);
          delay(120);
          digitalWrite(pin_rlya1, LOW);
        }
        if (c == '\n' && currentLineIsBlank)
        {
          client.println("HTTP / 1.1 200 OK"); // imprime na tela o nome minha casa //
          client.println("Content - Type: text / html");
          client.println();
          client.print(" < body style = background - color: Aquamarine > ");
          client.println(" < font color = ’black’ size = ’4′ > ");
          client.println();
          ///// Aciona o pino 7 do arduino com /7on no final do ip e desliga com 7off o pino 7 /////////
          client.println("<center> < a href = / 7on / > Quarto vero < / a > &nbsp; &nbsp; || &nbsp; &nbsp; < a href = / 7off / > Desligar < / a > < / center > ");
          client.println(" < hr width = 50 % > ");
          ///// Aciona o pino A2 do arduino com /A1 no final do ip e desliga com A1on pino A1 /////////
          client.println("<center> < a href = / 6on / > Ligar Sala 1 < / a > &nbsp; &nbsp; || &nbsp; &nbsp; < a href = / 6off / > Desligar < / a > < / center > ");
          client.println(" < hr width = 50 % > ");
          ///// Aciona o pino A1 do arduino com /a1on no final do ip e desliga com a1on pino A1 /////////
          client.println("<center> < a href = / a2on / > Portão 1 < / a > &nbsp; &nbsp; || &nbsp; &nbsp; < a href = / a1on / > Portão 2 < / a > < / center > ");
          client.println(" < hr width = 50 % > ");
          break;
        }
        if (c == '\n')
        {
          currentLineIsBlank = true;
        }
        else if (c != '\r')
        {
          currentLineIsBlank = false;
        }
      }
    }
    delay(1);
    client.stop();
  }
}