Help with Duff's Device in C++

[failbot]

Hi, I am working on this code:

#include <iostream>
using namespace std;

send(to, from, count)
{
         register int *to, *from;
         register int count;
         {
                 register n=(count+7)/8;
                 switch(count%8){
                 case 0: do{     *to++ = *from++;
                 case 7:         *to++ = *from++;
                 case 6:         *to++ = *from++;
                 case 5:         *to++ = *from++;
                 case 4:         *to++ = *from++;
                 case 3:         *to++ = *from++;
                 case 2:         *to++ = *from++;
                 case 1:         *to++ = *from++;
                         }while(--n>0);
                 }
         }
}

int main()
{
	int i;
	int a[5]={1,2,3,4,5};
	int b[]={0,0,0,0,0};

	/*output each a[i] and b[i] in decimal separated by a Tab on one line*/
	for(i=0; i<5; i++)
		printf("%d\t%d\n", a[i], b[i]);

	printf("----------------\n");

	send(b, a, 5);

	for(i=0; i<5; i++)
		printf("%d\t%d\n", a[i], b[i]);
}

and am getting the following error:

expected constructor, destructor, or type conversion before '(' token

I've tried using different types but it only gives me more errors. Can anyone help me fix this?

[mrnutty]

prepend void before send(...), thus making send a function, because the compiler is thinking its a constructor of some sort.

[failbot]

Using void returns these errors:

5: error: variable or field 'send' declared void
5: error: 'to' was not declared in this scope
5: error: 'from' was not declared in this scope

[mrnutty]

You need to define it as a function :

void send(int *to,int *from, int count)
{
         {
                 register n=(count+7)/8;
                 switch(count%8){
                 case 0: do{     *to++ = *from++;
                 case 7:         *to++ = *from++;
                 case 6:         *to++ = *from++;
                 case 5:         *to++ = *from++;
                 case 4:         *to++ = *from++;
                 case 3:         *to++ = *from++;
                 case 2:         *to++ = *from++;
                 case 1:         *to++ = *from++;
                         }while(--n>0);
                 }
         }
}

[failbot]

I had already tried this but then forgot to remove lines six and seven from my code. All I added to your version was the type "int" to register n. Thank you very much firstPerson.