Write a C program to calculate and display the coordinates of the
midpoint of the line segment connecting points entered by a user.
Use the fact that the coordinates of the midpoint between two points having
coordinates (x1, y1) and (x2,y2) are ((x1 + x2)/2, (y1 + y2)/2). Your program should
produce the following display:
The x midpoint coordinate is ___answer___
The y midpoint coordinate is ___answer___