Zigbee data sending through arduino is sending ASCII value how to send integer

Using Arduino Programming Questions
1

Hello I am using two zigbee and two arduino one zigbee is connected each arduino and from router zigbee I am sending data to receiver zigbee I am receiving data successfully, but I'm getting the data in ASCII form

Receiver Code

#include<SoftwareSerial.h>
#include<XBee.h>
SoftwareSerial XBee(2,3);
int data=0;
char IncomingData[13];
String temperature;
String gas;
String readString;
int val;
void setup() {
Serial.begin(9600);
XBee.begin(9600);
}

void loop() {

while (XBee.available())                           
{
char IncomingData = XBee.read(); 
//val=atol(IncomingData);
Serial.println("temperature1:"+buttonState);                  
     readString += IncomingData ;     
     temperature = readString.substring(0, 1); //get the first 13 characters
     gas = readString.substring(1, 3);
 Serial.println("temperature:"+temperature);
 Serial.println("gas:"+gas);
}
}

Sender Code

#include<dht.h>
#include<SoftwareSerial.h>
#include<XBee.h>
#define dht_apin 8             //A3
dht DHT;
const int ledPin=7;
int buzzer=5;
int temp;
int humid;
int a;
const int threshold=33;
SoftwareSerial XBee(2,3);     //Rx Tx

void setup()
{
Serial.begin(9600);
XBee.begin(9600);
delay(500);
pinMode(ledPin, OUTPUT);
pinMode(buzzer, OUTPUT);
Serial.println("DHT11 humidity and temperature sensor \n\n");
delay(1000);
}

void loop() 
{
DHT.read11(dht_apin);
temp=DHT.temperature; // store the temperature values in temp variable
humid=DHT.humidity;// store the humidity values in humid variable

Serial.print("humidity=");
Serial.print(humid);
Serial.print("%  ");
Serial.print(",");

//XBee.write("humidity=");  //sending humidity value
//XBee.write('H');
//delay(500);
XBee.write(humid);     //sending humidity value
// XBee.write("% ");      //send percentage
//XBee.write(" ");
//delay(500);
Serial.print("temperature=  ");
// XBee.write('T');
XBee.write(temp);
//delay(500);//sending temp value

Serial.print(temp);
Serial.print(" c ");
Serial.println();
delay(1000);
if (temp>threshold)
{
digitalWrite(ledPin, HIGH);
tone(buzzer, 1000, 200);
}
else
{
digitalWrite(ledPin, LOW);
noTone(buzzer);
}
}

And I am receiving the output showed in the image:

temperature:V
gas:[]V

2

Your receive code does not look correct. On the very first byte you read, you then try to parse out the temperature and gas values but they haven't arrived yet. How do you know you have received all 4 bytes (2 ints)?

Read Robin2's tutorial Serial Input Basics to learn how to do it properly. You can also download the SerialTransfer library and use that since it encapsulates all that.

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