PowerPoint Presentation

Practice Question 2–
Simple programming

nRead (x1,y1) and (x2,y2) the coordinates of the two opposite corners of a rectangle. Paint the rectangle in black and invert an oval inside the rectangle boundaries in red.

Solution 1

int x1, y1, x2, y2; // variable declare

cout << "\n Enter left : "; cin >> x1;

cout << "\n Enter top : "; cin >> y1;

cout << "\n Enter right : "; cin >> x2;

cout << "\n Enter bottom : "; cin >> y2;

SetForeColor(0,0,0); //set color to black

PaintRect(x1,y1,x2,y2); //paint a rectangle

InvertOval(x1,y1,x2,y2); //invert an oval

SetForeColor(255,0,0); //set color to red

FrameOval(x1,y1,x2,y2); //frame an oval

Solution 2

int x1, y1, x2, y2;

x1 = RequestInt("Enter left : ");

y1 = RequestInt("Enter top : ");

x2 = RequestInt("Enter right : ");

y2 = RequestInt("Enter bottom : ");

SetForeColor(0,0,0);

PaintRect(x1,y1,x2,y2);

InvertOval(x1,y1,x2,y2);

SetForeColor(255,0,0);

FrameOval(x1,y1,x2,y2);