const int m = 5;
int n;

void incr (char id)
{
        int i;

        for (i = 1; i <=m; i = i + 1)
        {
                n = n +1;
                cout << id << " n =" << n << " i = ";
                cout << i << " " << id << endi;
        }
}

main()
{
        n = 0;
        cobegin
        {
                incr( 'A' ); incr( 'B' ); incr( 'C');
        }

        cout << "The sum is " << n << end1;
}