Temperature Converter - Problem

Create a program that converts temperatures between Celsius and Fahrenheit scales.

Given a temperature in Celsius, calculate and display both:

The equivalent temperature in Fahrenheit
The original temperature in Celsius for verification

Use the formula: Fahrenheit = (Celsius × 9/5) + 32

Input: A floating-point number representing temperature in Celsius

Output: Two floating-point numbers - first the Fahrenheit equivalent, then the original Celsius value

Input & Output

Example 1 — Room Temperature

$ Input: celsius = 25.0

› Output: 77.0 25.0

💡 Note: Room temperature 25°C converts to 77°F using F = (25 × 9/5) + 32 = 77

Example 2 — Freezing Point

$ Input: celsius = 0.0

› Output: 32.0 0.0

💡 Note: Water freezing point 0°C converts to 32°F using F = (0 × 9/5) + 32 = 32

Example 3 — Negative Temperature

$ Input: celsius = -10.0

› Output: 14.0 -10.0

💡 Note: Cold temperature -10°C converts to 14°F using F = (-10 × 9/5) + 32 = 14

Constraints

-273.15 ≤ celsius ≤ 1000.0
Temperature must be above absolute zero

Visualization

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Asked in

G Google 15 a Amazon 12 M Microsoft 10

The key insight is applying the standard temperature conversion formula F = (C × 9/5) + 32 directly. Best approach uses direct mathematical calculation. Time: O(1), Space: O(1)

Common Approaches

✓ Basic Formula Application

⏱️ Time: O(1) Space: O(1)

Read the Celsius temperature, apply the conversion formula F = (C × 9/5) + 32, and return both the Fahrenheit result and original Celsius value.

Direct Mathematical Formula

⏱️ Time: O(1) Space: O(1)

Apply the standard temperature conversion formula F = (C × 9/5) + 32 in a single mathematical expression for maximum efficiency and clarity.

Basic Formula Application — Algorithm Steps

Read the Celsius temperature
Apply formula: multiply by 9, divide by 5, add 32
Return Fahrenheit and original Celsius values

Visualization

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Step-by-Step Walkthrough

Input

Read Celsius temperature

Convert

Apply F = (C × 9/5) + 32

Output

Return Fahrenheit and Celsius

Code -

solution.c — C

#include <stdio.h>

void solution(double celsius, double* result) {
    result[0] = (celsius * 9.0/5.0) + 32.0;
    result[1] = celsius;
}

int main() {
    double celsius;
    double result[2];
    scanf("%lf", &celsius);
    solution(celsius, result);
    printf("%.1f %.1f\n", result[0], result[1]);
    return 0;
}

Time & Space Complexity

Time Complexity

⏱️

O(1)

Fixed number of arithmetic operations regardless of input

✓ Linear Growth

Space Complexity

O(1)

Only uses a constant amount of variables

✓ Linear Space

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Temperature Converter - Problem

Input & Output

Constraints

Visualization

Related Problems

Common Approaches

Basic Formula Application — Algorithm Steps

Visualization

Code -

Time & Space Complexity

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