Chapter 1.1, Problem 3CE

To determine

To write a program in which user enters the coordinates of two points on a number line, and then program prints coordinates of the point halfway between the endpoints.

Explanation of Solution

Given:

The required program needs to find the midpoint of two given points.

Calculation:

The following is the required BASICProgram-

10 INPUT “Enter the x -coordinate of first point”: $x_1$

20 INPUT “Enter they -coordinate of first point”: $y_1$

30 INPUT “Enter the x -coordinate of second point”: $x_2$

40 INPUT “Enter the y -coordinate of second point”: $y_2$

50LET $x=(x_1+x_2)/2$

60 LET $y=(y_1+y_2)/2$

70 PRINT “The x coordinate of midpoint is”: $x$

80 PRINT “ They coordinate of midpoint is”: $y$

90 END.

DRY RUN of the program:-

INPUT:

Enter the x -coordinate of first point

  $x_1=-5$

Enter the y -coordinate of first point

  $y_1=1$

Enter the x -coordinate of second point

  $x_2=7$

Enter the y -coordinate of second point

  $y_2=3$

OUTPUT:

The x coordinate of midpoint is $x=1$

The y coordinate of midpoint is $y=2$