> ## 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.

# Swap Two Numbers

> Swap two integers without using a third variable.

## Problem Statement

Swap two integers without using a third variable.

## Solution

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

int main() {
    int a, b;
    scanf("%d %d", &a, &b);
    a = a + b;
    b = a - b;
    a = a - b;
    printf("a = %d, b = %d\n", a, b);
    return 0;
}
```

## Input

```
10 20
```

## Output

```
a = 20, b = 10
```