Puzzle T17

Triangle Constructor

Add to the previous program by defining a function that initializes a triangle.

/* declare the Point type */
/* declare the Color type */
/* declare the Triangle type */

/* function to print a Point */
void printPoint( Point *p ) {...}

/* function to print a Color */
void printColor( Color *c ) {...}

/* function to print a Triangle */
void printTriangle( Triangle *t ) {...}

/* function to initialize a Triangle */
void setTriangle( Triangle *t, Point p0, Point p1, Point p2, Color c ) {...}

int main()
{
  /* declare and initialize three Points and a Color */
  Point p0={-32,77}, p1={345, 490}, p2={140, 389};
  Color c={230, 120, 54};

  /* declare and initialize a Triangle */
  Triangle tri;
  setTriangle( &tri, p0, p1, p2, c );
  
  /* print the Triangle */
  printTriangle( &tri);
  
	
  return 0;
} 

The triangle constructor uses a mix of arguments: some are addresses and others are copies of other structs.