CSE271: Short Quiz #4 -- C Pointers

  1. Your name, today's date (2 points)
  2. Is there anything wrong with this code? If so, what is it? (2 points) 
       #include <string.h>

   char string1[] = "Hello, world!";
   char *string2;

   strcpy(string2, string1);
  3. At the end of this code, what is the value of i? (2 points) 
       int i = 4;
   int *p1, *p2;

   p1 = &i;
   p2 = p1 - 1;

   i++;
   i = *p1;
  4. What is the name of the library call that returns memory to the operating system that had originally been allocated using malloc()? (2 points) 
    


  5. What is a null pointer? (2 points)







Last revised: 8 February 2007, Brian D. Davison.