Open serial port problem

Projects Programming
3 
#include <SoftwareSerial.h>

Why? You never create an instance.

void loop()
{
if (x==0)   {
  for (n=1; n<(R1[0]+1); n++) {
 Serial.write (R1[n]);                }
                    }
x=1;
}

Unreadable rubbish. Learn to indent your code properly, AND to put the } on its own line.