C++ Program for temperature conversion which converts Fahrenheit to Celsius or Celsius to Fahrenheit

You will learn about the C++ program to convert temperature i.e degree Celsius into Fahrenheit and vice versa.

Temperature conversion formula:

F = ( 1.8 * C) + 32 //celsius into fahrenheit
C = ( F – 32 ) / 32 //fahrenheit into celsius

C++ Program to Convert Temperature

#include<iostream>
using namespace std;
int main()
{
   float fahr, cel;
   char option;

   cout << "Choose from following option:" << endl;
   cout << "1. Celsius to Fahrenheit." << endl;
   cout << "2. Fahrenheit to Celsius." << endl;
   cin >> option;
   if (option == '1')
   {
      cout << "Enter the temperature in Celsius: ";
      cin >> cel;

      fahr = (1.8 * cel) + 32.0; 
      cout << "\nTemperature in degree Fahrenheit: " << fahr << " F" << endl;
   }
   
   else if (option == '2')
   {
      cout << "Enter the temperature in Fahrenheit: ";
      cin >> fahr;

      cel = (fahr - 32) / 1.8;
      cout << "\nTemperature in degree Celsius: " << cel << " C" << endl;
   }
   else
      cout << "Error Wrong Input." << endl;

   return 0;
}

Output of Program

Choose from following option:

1. Celsius to Fahrenheit.
2. Fahrenheit to Celsius.
   1
   Enter the temperature in Celsius: 24

Temperature in degree Fahrenheit: 75.2 F