void * use_pointers(int *ptra, int *ptrb, int *ptrc);
void * use_ints(int x, int y);

void lang_struct_parith(int *p, int i)
{
    int *p1, *p2, *p3;
    int a, b;
        
    p1 = p + i;    /* 'Pointer Arithmetic' warning issued here */
    p2 = i + p;    /* 'Pointer Arithmetic' warning issued here */
    p2 += i;       /* 'Pointer Arithmetic' warning issued here */
    p2++;                      /* operator is not -, +, +=, or -= */
    p3 = *(p - 5); /* 'Pointer Arithmetic' warning issued here */
    p3 -= 4;       /* 'Pointer Arithmetic' warning issued here */
    a = *p - 5;                /* '-' operands are not pointers */                 
    b = p1 - p;                /* exception case: subtraction between two pointers */
    b += 5;                    /* '+=' operands are not pointers */

    use_ints(a,b);
    use_pointers(p1, p2, p3);
}