Swap two numbers in C using different methods

 1. Swap two numbers in C.

#include<stdio.h>

int main()

{

    int a, b;

    scanf("%d%d", &a, &b);

    int temp;

    temp = *x;

    *x = *y;

    *y = temp;

    printf("%d %d", a, b);

    return 0;

}

2. Swap two numbers in C using recursion method.

#include<stdio.h>

void swap(int *x, int *y)

{

    int temp;

    temp = *x;

    *x = *y;

    *y = temp;

}

int main()

{

    int a, b;

    scanf("%d%d", &a, &b);

    swap(&a, &b);

    printf("%d %d", a, b);

    return 0;

}

3. Swap two numbers in C without using any other variable.

#include<stdio.h>

int main()

{

    int a, b;

    scanf("%d%d", &a, &b);

    a = a ^ b;

    b = a ^ b;

    a = a ^ b;

    printf("%d and %d", a, b);

    return 0;

}