C Brain Teasers: Exercise Your Mind/

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Discussion: Superhero’s Secret Identity

Discussion: Superhero’s Secret Identity

Execute the code to understand the output and gain insights into array and pointer access.

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Run the code

Now, it's time to execute the code and observe the output.

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#include <stdio.h>
#define SIZE 5
int main()
{
  int values[SIZE] = {2, 3, 5, 8, 13};
  int *v, x;
  /* initialize the pointer */
  v = values;
  for( x=0; x<SIZE; x++ ) {
    printf("%2d = %2d\n",
      values[x],
      *(v+x)
    );
  }
  return(0);
}

Understanding the output

The code uses both array and pointer notation to output the first five Fibonacci numbers:

2 = 2 
3 = 3 
5 = 5 
8 = 8
13 = 13
Code output

Arrays and pointers

Arrays and pointers are similar but not exactly interchangeable. This relationship explains why many beginning C ...