C Program To Convert Celsius To Fahrenheit

The formula to convert is given by: 

T(^o_F) = (T(^o_C) × (9/5)) + 32

Where T(^o_F) is the temperature in Fahrenheit

(T(^o_C) is the temperature in Celsius 

The 9/5 fraction is a constant that adjusts for the difference in the scale of the two temperature systems. Fahrenheit degrees are smaller than Celsius degrees. Specifically, 1°C equals 1.8°F. So when you multiply the Celsius unit by the Fahrenheit scale, 

Going further, adding 32 is needed because 0°C is the freezing point of water in Celsius and in Fahrenheit, it’s 32°F. Adding it aligns the freezing point to balance the scale.

The algorithm for Celsius to Fahrenheit C program is as follows: 

• Start
• Input the temperature in Celsius 
• Apply the conversion formula: T(^o_F) = (T(^o_C) × (9/5)) + 32
• Output the temperature in Fahrenheit 
• End

Now let’s take a look at the C program to convert Celsius to Fahrenheit

#include <stdio.h>

int main() {
    float celsius, fahrenheit;

    // Prompt the user to enter the temperature in Celsius
    printf("\nEnter the Temperature in Celsius: ");
    scanf("%f", &celsius);

    // Convert Celsius to Fahrenheit
    fahrenheit = (1.8 * celsius) + 32;

    // Display the result
    printf("\nTemperature in Fahrenheit: %.2f\n", fahrenheit);

    return 0;
}

Output:

Enter the Temperature in Celsius: 0

Temperature in Fahrenheit: 32.00


=== Code Execution Successful ===

Code explanation: 

The C program transforms a temperature from degree celsius into fahrenheit unit. It begins with the use of an input prompt where the user is asked to input a temperature in the Celsius scale. In order to enter the value, a user needs to use the scanf() function that reads the entered value. The program then calculates the Fahrenheit equivalent using the formula: (1.8 * celsius) + 32. It is printed with printf() and rounded to two decimal places for the readability of the outcome.

#include <stdio.h>
float convertCelFahrenheit(float c)
{
    return ((c * 9.0 / 5.0) + 32.0);
}
int main()
{
    float celsius, fahrenheit;
    printf("Enter temperature in Celsius: ");
    scanf("%f", &celsius);
    //called function to convert celsius to fahrenheit
    fahrenheit = convertCelFahrenheit(celsius);
    printf("%.2f Celsius = %.2f Fahrenheit", celsius, fahrenheit);
    return 0;
}

Output:

Enter temperature in Celsius: 0
0.00 Celsius = 32.00 Fahrenheit

=== Code Execution Successful ===

Code Explanation: 

In the code example above, the conversion fahrenheit into degree celsius is done through a function. The function of convertCelFahrenheit() converts a Celsius value by multiplying by 9/5, then adding 32 to get the Fahrenheit value. In main(), the user gives a Celsius temperature, which is scanned using scanf(). The convertCelFahrenheit() function is invoked as a parameter that contains the given Celsius, and the variable Fahrenheit would contain the result. Last of all, printf() will print the result out. Using a function helps to smear the code clean and allows the conversion code to be called several times.

Learning a program to convert temperature from degree centigrade to Fahrenheit is essential for beginners as it helps solidify basic programming concepts like functions, input/output handling, and mathematical operations. It demonstrates how to break down a problem and solve it in a structured way, a critical skill in software development. 

Students build a foundation for more complex programming tasks by understanding how to write and use functions. Over the long term, mastering such fundamental concepts prepares students for career growth in software development, as it equips them with problem-solving skills and the ability to write clean, reusable code, which is highly valued in the industry.

To get started on your professional journey and become job-ready, enroll in the CCBP Academy 4.0 program to build skills that will set you up for a career in software.

1. How do we convert Celsius temperature to Fahrenheit?

The formula to convert Celsius (C) to Fahrenheit (F) is: F = (C * 9/5) + 32. Here, you enter the temperature in degrees Celsius, and the formula outputs the temperature in Fahrenheit.

2. What data types should I use in the variable of a program that asks the user to input Celsius temperature to convert into Fahrenheit?

Celsius and Fahrenheit can be of float or double data types so that actual decimal values are considered.

3. Why is it vital to learn how to convert between Celsius and Fahrenheit scales?

Temperature conversion is very important in data processing, especially when converting data from various sources or units that have been stored in different systems. The importance is as follows: Different uses include Meteorology, scientific analysis, and engineering.

4. What are the libraries in C for temperature functions? 

C does not consist of data structures for conversion of temperature built-in. However, programmers can create user-defined functions for these conversions in their programs.

5. What exactly do you mean by Celsius and Fahrenheit about temperature scales?

The Celsius scale starts from the freezing point and boiling point of water at 0°C and 100°C respectively, while the Fahrenheit scale starts from the freezing point of water at 32°F and reaches the boiling point of water at 212°F. Celsius is also more internationally used than Fahrenheit degrees, which are smaller and have finer divisions in some weather uses.