1. (5) What is the address operator?
 
 
        &
 
 
 
 2. (5) What is the indirection operator?
 
 
        *
 
 
 
 3. (5) What is the value of x?
 
           int counter = 25;
           int *a_pointer;
           a_pointer = &counter;
           x = *a_pointer;
 
 
        x = 25
 
 
 
 4. (5) Using a pointer, set the month of today's date to 12.
 
           struct date
            {
             int month;
             int day;
             int year;
            };
           struct date todays_date;
           struct date *p1;
           p1 = &todays_date;
 
 
        p1->month = 12;     or     (*p1).month = 12;
 
 
 
 5. (5) Code the C statements to link the following lists together.
 
           struct item
            {
             int value;
             struct item *next;
            };
            struct item list1, list2, list3;
 
 
        list1.next = &list2;
        list2.next = &list3;
 
 
 
 6. (5) Code the C statements to link 'list2a' in between 'list2' and 'list3'
        (use code from Problem #5).
 
           struct item list2a;
 
 
        list2a.next = list2.next;
        list2.next = &list2a;
 
 
 7. (5) Code the C statement that marks 'list3' as the end of the linked list
        (use code from Problem #5).
 
 
        list3.next = 0;          
 
 
 
 8. (5) Using the following code, set x equal to the fourth element of the array
        values (use a pointer).
 
           int x, values[], *values_pointer;
           values_pointer = values;
 
 
        x = *(values_pointer+3);
 
 
 
 9. (5) Using the following code, what is the value of x?
 
           static char string1[] = "This is a character string";
           char c, x, *c_pointer;
           c_pointer = string1;
           x = *(c_pointer);
 
 
        x = 'T'
 
 
10. (5) Using the code from Problem #9, what are the values of a and b?
 
           char a, b;
           c_pointer = &string1[12];
           a = *(c_pointer++);
           b = *(--c_pointer);
 
 
        a = 'a'
        b = 'a'
 
 
 
11. (5) Given the following function, declare a pointer to a function that returns
        an int and assign the function to it.
 
           int lookup ();
 
 
        int (*func_ptr) ();     or     int *func_ptr = lookup;
        func_ptr = lookup;
 
 
 
12. (5) Convert -25 (decimal) to binary using two's compliment (use an 8 bit word).
 
 
        Add +1                -24
        Absolute Value         24
        Change to Binary      00011000
        Compliment the Bits   11100111
 
 
 
13. (5) Perform the following bitwise operation.
 
                   w1   0 1 0 0 1 1 1 0
                   w2   1 1 0 1 0 1 0 1
 
           w1 & w2      0 1 0 0 0 1 0 0
 
 
 
14. (5) Perform the following bitwise operation.
 
                   w1   0 1 0 0 1 1 1 0
                   w2   1 1 0 1 0 1 0 1
 
           w1 | w2      1 1 0 1 1 1 1 1
 
 
 
15. (5) Perform the following bitwise operation.
 
                   w1   0 1 0 0 1 1 1 0
                   w2   1 1 0 1 0 1 0 1
 
           w1 ^ w2      1 0 0 1 1 0 1 1
 
 
 
16. (5) Perform the following bitwise operation.
 
                   w1   0 1 0 0 1 1 1 0
 
               ~w1      1 0 1 1 0 0 0 1
 
 
 
17. (5) Perform the following bitwise operation.
 
                   w1   0 1 0 0 1 1 1 0
 
           w1 << 3      0 1 1 1 0 0 0 0
 
 
 
18. (5) Perform the following bitwise operation.
 
                   w1   0 1 0 0 1 1 1 0
 
           w1 >> 2      0 0 0 1 0 0 1 1
 
 
 
19. (5) Perform the following bitwise operation.
 
                   w1       1 0 0 1 1 1
                   w2   0 1 0 1 1 0 0 1
 
           w1 & w2      0 1 0 0 0 0 0 1
 
 
 
20. (5) Define a structure of packed data where the first two bits are flags, the next
        two bits are a type field, and the remaining four bits are an address field.
 
 
        struct packed_date
        {
         unsigned int flag1:1;
         unsigned int flag2:1;
         unsigned int type:2;
         unsigned int address:4;
        };