Swapping Two numbers

     Using 3rd Variable

void swap(int m, int n)
{
    int temp;
    temp = m;
    m = n;
    n = temp;
    printf("\nAfter Swapping, the numbers are: ");
    printf("\n\nFirst Number is: %d",m);
    printf("\nSecond Number is: %d",n);
}

---

          Without Using 3rd Variable

void swap(int m, int n)
{
    m = m + n;
    n = m - n;
    m = m - n;
    printf("\nAfter Swapping, the numbers are: ");
    printf("\n\nFirst Number is: %d",m);
    printf("\nSecond Number is: %d",n);
}

---

          Without Using 3rd Variable

void swap(int m, int n)
{
    m = m ^ n;
    n = m ^ n;
    m = m ^ n;
    printf("\nAfter Swapping, the numbers are: ");
    printf("\n\nFirst Number is: %d",m);
    printf("\nSecond Number is: %d",n);
}

OR

void swap(int m, int n)
{
    m ^= n ^= m ^= n;
    printf("\nAfter Swapping, the numbers are: ");
    printf("\n\nFirst Number is: %d",m);
    printf("\nSecond Number is: %d",n);
}

---

Without Using 3rd Variable but both numbers should be Non-Zero

void swap(int m, int n)
{
    if(m != 0 && n != 0)
    {
        m = m * n;
        n = m/n;
        m = m/n;    
        printf("\nAfter Swapping, the numbers are: ");
        printf("\n\nFirst Number is: %d",m);
        printf("\nSecond Number is: %d",n);
    }
    else
    {
        printf("\n Both the numbers should be Non-Zero!");
    }
}

          OR

          void swap(int m, int n)

{
    if(m != 0 && n != 0)
    {
        n = m * n;
        m = n/m;
        n = n/m;
        printf("\nAfter Swapping, the numbers are: ");
        printf("\n\nFirst Number is: %d",m);
        printf("\nSecond Number is: %d",n);
    }
    else
    {
        printf("\n Both the numbers should be Non-Zero!");
    }
}

---

          Swapping in a Single Line

void swap(int m, int n)
{
    n = m + n - (m = n);
    printf("\nAfter Swapping, the numbers are: ");
    printf("\n\nFirst Number is: %d",m);
    printf("\nSecond Number is: %d",n);
}