Consider the following code:

/* exam question */

#include <stdio.h>

int main(void)
{
  int a[] = {3, 4, 0, 2, 1, 0, 20};
  int b[] = {0,1,0,2,3,0,0,1};

  int size = 7;

  int x,y;

  x = countZeros(a, size);
  y = countZeros(b, 8);
 
  printf("x=%d y=%d\n",x,y);

  return 0;

}

Questions

(1) Write the fn prototype for the user-defined fn that is being
    called in main().

(2) Write the fn definition for the user-defined fn that is being
    called in main().

(3) Suppose I replaced the printf with each of the following. What
    would the output be?

a    printf("%d\n",a[0]);

b    printf("%d\n",a[5]);

c    printf("%d\n",a[8]);

d    printf("%d\n",b[8]);


Answer key:

a   3
b   0
c   unpredictable
d   unpredictable

4) Suppose we replace countZeros with findFinalZero, which should
return the index of the last zero in the array, or -1 if no zeros exist.

Write the fn. definition

Sample output:

x=5 y=6