DHT22 Temp conversion help

Am building a wireless weather station and am using the DHT22 from Adafruit.My son spilled juice on my Uno so I can't test it myself yet until I get my new one.The coding I have is for Celsius and I want it to display Farenheit.I'm using the following code to get started,but I To convert the Celsius to Fahrenheit and display it correctly I need to add this code to the loop correct:
temp_f = (t * 9)/ 5 + 32;
And i've changed the serial print for t to temp_f

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

#include "DHT.h"

#define DHTPIN 2 // what pin we're connected to

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println("DHTxx test!");
 
  dht.begin();
}

void loop() {
  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // check if returns are valid, if they are NaN (not a number) then something went wrong!
  if (isnan(t) || isnan(h)) {
    Serial.println("Failed to read from DHT");
  } else {
    Serial.print("Humidity: ");
    Serial.print(h);
    Serial.print(" %\t");
    Serial.print("Temperature: ");
    Serial.print(temp_f);
    Serial.println(" *F");
  }
}

but I To convert the Celsius to Fahrenheit and display it correctly I need to add this code to the loop correct
temp_f = (t * 9)/ 5 + 32;

You'll need more than that, and some minor modifications:
float temp_f = (t * 9.0)/5.0 + 32.0;

Thanks PaulS....

For Celsius to Fahrenheit the integer version will have a max error of 0.8 F. (average 0.40)

There is a slightly different integer formula which only has a max error of 0.4 F. (average 0.24)

F = (C* 9 +2)/5+32; // The +2 takes care of the better rounding

robtillaart:
For Celsius to Fahrenheit the integer version will have a max error of 0.8 F. (average 0.40)

There is a slightly different integer formula which only has a max error of 0.4 F. (average 0.24)

F = (C* 9 +2)/5+32; // The +2 takes care of the better rounding

Oh wow I didn't even think about that...thanks for the error correction i've added it to my sketch.