C++ Exercises: Convert temperature in Fahrenheit to Celsius

Last update on August 11 2025 12:57:27 (UTC/GMT +8 hours)

Fahrenheit to Celsius Conversion

Write a C++ program to convert temperature in Fahrenheit to Celsius.

Sample Solution:

C++ Code :

#include <iostream> // Including the input-output stream header file

using namespace std; // Using the standard namespace

int main() // Start of the main function
{
    float frh, cel; // Declaring floating-point variables for Fahrenheit and Celsius temperatures

    cout << "\n\n Convert temperature in Fahrenheit to Celsius :\n"; // Outputting a message indicating temperature conversion
    cout << "---------------------------------------------------\n"; // Outputting a separator line

    cout << " Input the temperature in Fahrenheit : "; // Prompting the user to input the temperature in Fahrenheit
    cin >> frh; // Taking input for the Fahrenheit temperature from the user

    cel = ((frh * 5.0) - (5.0 * 32)) / 9; // Converting Fahrenheit to Celsius using the formula: (Fahrenheit - 32) * 5/9

    cout << " The temperature in Fahrenheit : " << frh << endl; // Displaying the input temperature in Fahrenheit
    cout << " The temperature in Celsius : " << cel << endl; // Displaying the converted temperature in Celsius
    cout << endl; // Outputting a blank line for better readability

    return 0; // Returning 0 to indicate successful program execution
} // End of the main function

Sample Output:

 Convert temperature in Fahrenheit to Celsius :                        
---------------------------------------------------                    
 Input the temperature in Fahrenheit : 95                              
 The temperature in Fahrenheit : 95                                    
 The temperature in Celsius : 35

Flowchart:

For more Practice: Solve these Related Problems:

Write a C++ program to convert a temperature from Fahrenheit to Celsius and verify the conversion with a reverse calculation.
Write a C++ program that reads a Fahrenheit temperature, converts it to Celsius, and then displays the result with a precision of two decimals.
Write a C++ program to implement a function that converts Fahrenheit to Celsius and uses it to convert multiple values stored in an array.
Write a C++ program that accepts a Fahrenheit temperature, converts it to Celsius, and then prints a message indicating if the temperature is below freezing.

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C++ Code Editor:

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