five different procedures of swapping two numbers

Procedure-1 : (  Using 3rd Variable)

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

 Procedure-2 : ( Without Using 3rd Variable)

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

Procedure-3 : (Without Using third variable: with using Bitwise operator)

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

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);
}

 Procedure-4 : (Without Using 3rd Variable but both numbers must not be equal to Zero)

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

    

Procedure-5 :  Swapping in a Single Line

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



Enjoy Programming!!!