// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

#include "DHT.h"

#define DHTPIN  3     // PIN # for DHT22 Temperature Sensor
#define TXPIN   1    // PIN # for 433Mhz Transmitter
#define LEDPIN  0    // PIN # for LED Indicator

#define DHTTYPE DHT22   // DHT 21 (AM2301)

DHT dht(DHTPIN, DHTTYPE);

unsigned long msg_timer = 15000; // Transmits a signal every 1 minute
unsigned long msg_gap = 32; //gap between packets

char buf[11]; //message to be built

void setup() {
//  Serial.begin(9600);
  //Serial.println("Wireless Temp");
  pinMode(LEDPIN,OUTPUT);
  pinMode(TXPIN, OUTPUT);
  dht.begin();
}

// Changed int to float
// num is in Celsius. Ex) 26.30

void make_message(float num) {

  // make up a TC6U message from the integer num (-500 to 499)

  // parity table  0 1 2 3 4 5 6 7 8 9
  char   ptable[]={
    0,1,1,2,1,2,2,3,1,2  }; //number of bits set
  int p;  //parity bit
  char h,t,d;  //hundreds,tens,digits

  p=0; //clear parity

  // preamble
  buf[0] = 0;
  buf[1] = 0xa;  //message length and start bits
  buf[2] = 0xe;    //type = temperature
  buf[3] = 0xf;  //device ID
  buf[4] = 0x0;  //bottom bit is parity

    num = num * 10;

  // encode the integer
  num = num+0;
  h = num/100;

  buf[5] = h;  //save hundreds
  p += ptable[h];  //update parity calculation
  num = num - h*100;
  t = num/10;
  buf[6] = t; //save tens
  p += ptable[t];  //update parity
  d = num - t*10;
  buf[7] = d; //save digits
  p += ptable[d];
  buf[8] = h; //second copy of hundreds digit
  buf[9] = t; //second copy of tens digit

  //if value parity odd, set message parity bit
  if ( (p&1) == 1) buf[4] |= 1;
  //calculate and store checksum
  buf[10] = (buf[1]+buf[3]+buf[4]+buf[5]+buf[6]+buf[7]+buf[8]+buf[9])&0x0F;
}

void send_one(char s) { //s=1 for short TXPIN off. 4th bit of quartet
  digitalWrite(TXPIN,HIGH);
  delayMicroseconds(588);
  digitalWrite(TXPIN,LOW);
  if (s) delayMicroseconds(1020);
  else delayMicroseconds(1088);
}

void send_zero(char s) { //s=1 for short TX off, 4th bit of quartet
  digitalWrite(TXPIN,HIGH);
  delayMicroseconds(1400);
  digitalWrite(TXPIN,LOW);
  if (s) delayMicroseconds(1020);
  else delayMicroseconds(1088);
}

void send_burst(char *msg) {
  char i,c;

  for(i=0; i<12; i++) {

    c = *msg++;  //values in lower 4 bits

    //unroll inner loop, send a quartet

    if(c&8) send_one(0);
    else send_zero(0);
    if(c&4) send_one(0);
    else send_zero(0);
    if(c&2) send_one(0);
    else send_zero(0);
    if(c&1) send_one(1); //"short tx off" (1020 us) for last bit
    else send_zero(1);
  }
}

// Changed int to float

void send_message(float num) {
  digitalWrite(LEDPIN,HIGH);
  make_message(num);
  send_burst(buf);
  delay(msg_gap);
  send_burst(buf);
  digitalWrite(LEDPIN,LOW);
}

void loop() {
  // Wait a few seconds between measurements.
  delay(2000);

//   Reading temperature or humidity takes about 250 milliseconds!
//   Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float t = dht.readTemperature();
  float h = dht.readHumidity();
  // Check if any reads failed and exit early (to try again).
  if (isnan(t)) {
//    Serial.println("Failed to read from DHT sensor!");
    return;
  }

//  Serial.print(t);
  //Serial.println(" *C\t");
  send_message(h);
  send_message(t); // t is in Celisius. Ex) 26.30
  delay(msg_timer);
}

Wenn ich nun Temp. und Luftfeuchte einzeln send funktioniert das sehr gut nur komme ich nicht drauf wie das ganze aussehen muss wenn ich beides senden möchte.

Brauche dringend Hilfe und danke schonmal im Vorraus

Ausßerdem: Der Code ist kein C++, sondern grauenhaft. Globale Variablen, #define und Makros, char-Buffer statt container wie std::string, nichtssagende Variablen, fehlendes const.

iwie scheint das für Arduino oder ähnlichen Mikrocontroller zu sein, welche allerdings i C programmiert werden, nicht in C++