[Courses] [C] Lesson12: Exercise answers

[Laura Bowser]

> [1] Write a program that uses pointers to set each element of an
>     array to zero.

I couldn't resist, and I'm going to "cheat" here, this solution technically 
meets all the requirements, but may not be the easiest to understand - I put 
in comments where I felt appropriate, but feel free to ask me about anything 
in this program.

#define N 30

void main(void) {
  int *array;      /* create the array- here's the pointer */

   array = (int *) calloc(N, sizeof(int));     /* set every element to zero */

 /* calloc allocates space for N things, of sizeof(int) size and sets it to an 
appropriate initial value.  In this case 0 because I'm dealing with ints, if 
I was dealing with pointers, then it would become NULL.  */

}

Laura

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