C Program To Convert Celsius To Fahrenheit And Vice Versa

Temperature conversion is a common task in programming, especially when dealing with diverse international standards or working on applications that require data in different units. In this comprehensive guide, we explore the algorithm, pseudocode, and implementation of C Program To Convert Celsius To Fahrenheit.

The fundamental formula for this conversion is straightforward: multiply the Celsius temperature by 9/5 and add 32. This guide not only provides a basic program but also extends to more advanced versions, including a function-based approach and a program incorporating a switch statement for dual conversions.

Algorithm

1. Start

2. Input temperature in Celsius (`celsius`).

3. Apply the conversion formula to calculate Fahrenheit (`fahrenheit`).

4. Output the result.

5. End

Pseudocode

START

    INPUT celsius

    fahrenheit = (celsius * 1.8) + 32

    OUTPUT fahrenheit

END

How to Convert Celsius to Fahrenheit

Celsius to Fahrenheit conversion involves a simple formula: multiply the Celsius temperature by 9/5 and add 32. This quick calculation allows you to seamlessly convert temperatures between the two scales. For instance, if you have a Celsius temperature of 20, applying the formula results in 68 Fahrenheit. Read more here.

Formula

The mathematical equation used to convert a temperature value from the Celsius scale to the Fahrenheit scale is as follows:

Fahrenheit=(Celsius×9/5​)+32

Simple Program In C

#include <stdio.h>

int main() {

    // Declare variables

    float celsius, fahrenheit;

    // Input temperature in Celsius

    printf("Enter temperature in Celsius: ");

    scanf("%f", &celsius);

    // Convert Celsius to Fahrenheit

    fahrenheit = (celsius * 9/5) + 32;

    // Output the result

    printf("Temperature in Fahrenheit: %.2f\n", fahrenheit);

    return 0;

}

Output & Complexity Analysis

Time Complexity: O(1)

The above program involves fundamental arithmetic operations and input/output statements. It has constant time complexity since it executes the same amount of operations regardless of input size.

C program to convert Celsius to Fahrenheit using a function

#include <stdio.h>

// Function to convert Celsius to Fahrenheit

float convertToFar(float celsius) {

    return (celsius * 9/5) + 32;

}

int main() {

    // Declare variables

    float celsius, fahrenheit;

    // Input temperature in Celsius

    printf("Enter temperature in Celsius: ");

    scanf("%f", &celsius);

    // Use the function to convert Celsius to Fahrenheit

    fahrenheit = convertToFar(celsius);

    // Output the result

    printf("Temperature in Fahrenheit: %.2f\n", fahrenheit);

    return 0;

}

Output & Complexity Analysis

Time Complexity: O(1)

Like the basic program, time complexity is constant. Since the function performs a given number of operations, its execution time is independent of input size.

C Program To Convert Celsius To Fahrenheit And Vice Versa Using Switch

#include <stdio.h>

int main() {

    // Declare variables

    float temperature;

    char scale;

    // Input temperature and scale

    printf("Enter temperature: ");

    scanf("%f", &temperature);

    printf("Enter scale (C for Celsius, F for Fahrenheit): ");

    scanf(" %c", &scale);  // Note the space before %c to consume the newline character

    // Perform conversion based on the scale

    switch(scale) {

        case 'C':

        case 'c':

            printf("%.2f Celsius is equal to %.2f Fahrenheit.\n", temperature, (temperature * 9/5) + 32);

            break;

        case 'F':

        case 'f':

            printf("%.2f Fahrenheit is equal to %.2f Celsius.\n", temperature, (temperature - 32) * 5/9);

            break;

        default:

            printf("Invalid scale. Please enter C or F.\n");

    }

    return 0;

}

Output & Complexity Analysis

Time Complexity: O(1)

The switch statement manages distinct cases based on the provided input, yet the overall number of cases remains constant.. As a result, O(1), or constant time complexity, exists.

Conclusion

In this guide, we covered the algorithm, pseudocode, and different C programs to convert Celsius to Fahrenheit. The programs are designed to be plagiarism-free with unique variable names, examples, and expressions. Please explore and adjust the programs to your need.

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