> ## Documentation Index
> Fetch the complete documentation index at: https://learn.acadlink.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Marathon Calorie Calculator

> Calculate calories burned by a marathon runner based on distance travelled.

## Problem Statement

Imagine you are developing a fitness tracking app for marathon runners. The app's goal is to calculate how many calories a runner burns based on the distance they run. A person burns **50 cal/km**.

Write a C program that takes distance travelled in metres and calculates the calories burned by the marathon runner.

## Test Case

|                     |                                          |
| ------------------- | ---------------------------------------- |
| **Input**           | Distance in metres: 7500                 |
| **Expected Output** | You burned 375 calories by running 7.5km |

## Solution

```c theme={null}
#include <stdio.h>

int main() {
    float distance;

    printf("Enter the distance you travelled in metres: ");
    scanf("%f", &distance);

    float kmdistance = distance / 1000;
    float calorieburn = kmdistance * 50;

    printf("You burned %.0f calories by running %.1fkm.\n", calorieburn, kmdistance);

    return 0;
}
```

## Input

```
Enter the distance you travelled in metres: 7500
```

## Output

```
You burned 375 calories by running 7.5km.
```