Question

Write a program to draw a black colour line in QBASIC?​

Answer 1

Answer:

In computer graphics, a line is made by setting many adjacent pixels to the same color. You could draw a line by using the PSET statement many times. But there is an easier way. To draw a line of pixels all of the same color use the LINE statement:

LINE  (startX, startY)-(endX, endY)

This statement:

Uses the current pen color.

Sets all the pixels along a line starting at (startX, startY) and ending at (endX, endY)

If a pixel along the line has already been set, it is set to the current pen color.

Here is a program that does the same as the previous program, except using a LINE statement:

' Setting 10 pixels in row 3

' to color 4 (Red)

'

SCREEN 12

COLOR 4

LINE (1, 3) - (10, 3) ' draw a line from (1,3) to (16,3)

END

The program is much shorter than the one that uses PSET. The picture on the graphics screen will look like this (slightly enlarged):

Explanation:

Answer 2

Answer:

this is the correct answer