How to calculate cumulative grade point average for a student offering three courses each in a 3 years academic program.

Q BASIC PROGRAMMING

This program is written to calculate CGPA  for a student running a 3 years academic calendar with three courses in each year  using the following grade category 

70% - 100% 5 points 

50%-69%   4 points 

40%-49%  3 points 

Below 45% 0 point