Figure 2.18  A Program That Produces Incorrect Results Due to & Omission
#include <stdio.h>

int
main(void)
{
      int    first, second, sum;

      printf("Enter two integers> ");
      scanf("%d%d", first, second); /* ERROR!! should be  &first, &second */
      sum = first + second;
      printf("%d + %d = %d\n", first, second, sum);

      return (0);
}

Enter two integers> 14  3
5971289 + 5971297 = 11942586