C Tutorial/Pointer/Address Operator

Using the & and * operators

<source lang="cpp">#include <stdio.h> int main() {

  int a;        /* a is an integer */
  int *aPtr;    /* aPtr is a pointer to an integer */
  a = 7;
  aPtr = &a;    /* aPtr set to address of a */
  printf( "The address of a is %p"
          "\nThe value of aPtr is %p", &a, aPtr );
  printf( "\n\nThe value of a is %d"   
          "\nThe value of *aPtr is %d", a, *aPtr );
  printf( "\n\nShowing that * and & are complements of "
          "each other\n&*aPtr = %p"   
          "\n*&aPtr = %p\n", &*aPtr, *&aPtr );
  return 0; 

}</source>

The address of a is 9a37c
The value of aPtr is 9a37c
The value of a is 7
The value of *aPtr is 7
Showing that * and & are complements of each other
&*aPtr = 9a37c
*&aPtr = 9a37c