Transmitter Code

#include  <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"
int msg[256];
RF24 radio(8,7);
const uint64_t pipe = 0xE8E8F0F0E1LL;

void setup(){
 Serial.begin(9600);
 radio.begin();
 radio.openWritingPipe(pipe);
 }

 void loop(){
 int x = analogRead(A0);
 msg[0] = x;
 radio.write(msg, 3);
 }