Puzzle T19

Point Equality

Write a function that determines if two Points are equal. Two Points are equal if their X coordinate is the same and their Y coordinate is the same.

/* declare the Point type */
typedef struct
{
  int x, y;
} Point;

/* function to print a Point */
void printPoint( Point *p )
{
  printf("(%d, %d) ", p->x, p->y );
}

/* are two Points equal? */
int equalPoint( Point *ptA, Point *ptB )
{
. . .
}

int main()
{
  Point p1 = { 23, 45 };
  Point p2 = { 23, 45 };
  Point p3 = { 86, 99 };

  if ( equalPoint( &p1, &p2 ) )
    printf("Equal: " );
  else
    printf("Not Equal: ");

  printPoint( &p1 );
  printf("\t");
  printPoint( &p2 );
  printf("\n");

  if ( equalPoint( &p1, &p3 ) )
    printf("Equal: " );
  else
    printf("Not Equal: " );

  printPoint( &p1 );
  printf("\t");
  printPoint( &p3 );
  printf("\n");


  return 0;
}