Swap Function

Can anyone tell me real quick and fast way to write a swap function for an array of unsigned characters. I have my entire assignment done but this part and I just don't get it....Anyone?

Code:

---

int i;
int array[size];

void swap(your parameters) {
          i = array[swapindex];
          array[swapindex] = newvalue;
          array[indextoswap] = i;
}

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Basically just use a temporary unsigned integer to hold the value of the index that you are swapping with a new value. Is that your problem, or are you having problems passing the array to a function as a parameter?

>Can anyone tell me real quick and fast way to write a swap
>function for an array of unsigned characters.

Code:

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typedef unsigned char uchar;

void swap ( uchar *x, uchar *y )
{
  uchar temp = *x;
  *x = *y;
  *y = temp;
}

---

The call to this function is
swap ( &array[x], &array[y] );

-Prelude