//---------------------------------------------------------

1. for (i=0,s=0; i< 10; i++)

     if (A[i]>s) s=A[i];

//---------------------------------------------------------

2. for (i=1,k=0; i< 10; i++)

     if (A[i]>A[k]) k=i;

//---------------------------------------------------------
3. for (i=1,k=0; i< 10; i++)

     if (A[i]<A[k]) k=i;

//---------------------------------------------------------

4. for (i=0,s=0; i< 10; i++)