C PROGRAMMING PROGRAM • BASICS & INPUT/OUTPUT

Convert Celsius to Fahrenheit

Learn how to convert celsius to fahrenheit using a clear C program.

BeginnerfloatFormulaConversion

PROBLEM UNDERSTANDING

Input and expected output

Sample input

Sample output

Fahrenheit = 77.00

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

int main(void)
{
    double celsius, fahrenheit;

    printf("Enter temperature in Celsius: ");
    scanf("%lf", &celsius);
    fahrenheit = (celsius * 9.0 / 5.0) + 32.0;
    printf("Fahrenheit = %.2f\n", fahrenheit);
    return 0;
}

CURRENT STEP

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SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

Fahrenheit = 77.00

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Multiply the Celsius value by 9/5 and add 32.
Display the computed result.

Multiply the Celsius value by 9/5 and add 32.

EFFICIENCY

Time and space complexity

Time complexity

O(1)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

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Use the correct format specifier for every variable.

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Initialize variables before using their values.

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Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.