if (EthernetClient)

EthernetClient client;

if (client)

#include <Ethernet.h>
 
byte ip[] = { 10, 0, 0, 177 };
byte server[] = { 64, 233, 187, 99 }; // Google
 
EthernetClient client;
 
void setup()
{
  Ethernet.begin(NULL, ip);
  Serial.begin(9600);
 
  delay(1000);
 
  Serial.println("connecting...");
 
  if (client.connect(server, 80)) {
    Serial.println("connected");
    client.println("GET /search?q=arduino HTTP/1.0");
    client.println();
  } else {
    Serial.println("connection failed");
  }
}
 
void loop()
{
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }
 
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
    for(;;)
      ;
  }
}