Classic swap function in C and C++

In C:

void Swap(int* a, int* b) 
{
    int temp;
    temp = *a;
    *a = *b;
    *b = temp;
}

void SwapCaller() 
{
    int x = 1;
    int y = 2;
    // Use & to pass pointers to the int values of interest
    Swap(&x, &y); 
}

In C++:

// The & declares pass by reference
void Swap(int& a, int& b) 
{
    int temp;
    // No *'s required -- the compiler takes care of it    
    temp = a;
    a = b;
    b = temp;
}

void SwapCaller() 
{
    int x = 1;
    int y = 2;
    // No &'s required -- the compiler takes care of it
    Swap(x, y); 
}