How do I split an incoming char?

Question

I am sending a list of joystick positions via the serial connection to the arduino in the following format

515;520

Which would be parsed as:

x=515

y=520

How would I split these values up, and convert them to an integer?

MyReceiver:

#include <SoftwareSerial.h>
#define xBeeRxPin 10
#define xBeeTxPin 9
SoftwareSerial xBeeSerial(xBeeRxPin, xBeeTxPin);
char val;
void setup() {
  xBeeSerial.begin(38400);
  Serial.begin(38400);
}
void loop() {
if(xBeeSerial.available()>0){
   val = xBeeSerial.read();
   Serial.print(val);
  }
}

My Coordinator:

#include <SoftwareSerial.h>
#define xBeeRxPin 10
#define xBeeTxPin 9
int deger1;
int deger2;
SoftwareSerial xBeeSerial(xBeeRxPin, xBeeTxPin);
void setup() {
xBeeSerial.begin(38400);
}
void loop() {
deger1 = analogRead(A0);
  deger2 = analogRead(A2);
  char buf[1000];
  const char first = " ";
  const char second = ";";
  char val[4];
  char deger[4];
strcpy(buf,first);
  sprintf(val,"%d",deger1); 
  strcat(buf,val);
  strcat(buf,second);
  sprintf(deger,"%d",deger2);
  strcat(buf,deger);
Serial.print(buf);
  xBeeSerial.write(buf);

  delay(200);
}