CSC 2400 โ Exercises on Pointers in C
This handout involves playing with a number of C programs to solve some problems involving pointers.
There are 4 different problems. Work on as many as you can in class, and finish them at home. If you are a
pointer guru, try your hand at the segvhunt (exercise 5). Exercise 5 goes beyond what we expect you to know
at the moment ...
The exercises here should help make sure you understand pointers. It's important to make sure you understand
things (get help if you are stuck!).
Exercise 1
/* p1.c
Write a short C program that declares and initializes (to any value you like) a
double, an int, and a char. Next declare and initialize a pointer to each of
the three variables. Your program should then print the address of, and value
stored in, and the memory size (in bytes) of each of the six variables.
Use the โ0x%xโ formatting specifier to print addresses in hexadecimal. You
should see addresses that look something like this: "0xbfe55918". The initial
characters "0x" tell you that hexadecimal notation is being used; the remainder
of the digits give the address itself.
Use โ%fโ to print a floating value. Use the sizeof operator to determine the
memory size allocated for each variable.
Sample output:
The address of char ___ is 0x_______
The address of int ___ is 0x_______
The address of double ___ is 0x_______
The address of char* ___ is 0x_______
The address of int* ___ is 0x_______
The address of double* ___ is 0x_______
The value of char ___ is _______
The value of int ___ is _______
The value of double ___ is _______
The value of char* ___ is 0x_______
The value of int* ___ is 0x_______
The value of double* ___ is 0x_______
The size of char is _______ bytes
The size of int is _______ bytes
The size of double is _______ bytes
The size of char* is _______ bytes
The size of int* is _______ bytes
The size of double* is _______ bytes
*/
