$3$ Problem $2$: GPA Calculator

$3\mathrm{.}1$ Problem Definition

A university assesses students' academic performance using a cumulative GPA system. Each course contributes to the cumulative GPA based on the grade achieved and the course's credit hours.

The grading system is shown in Table $1,$ and the cumulative GPA is calculated using Equation $1$:

$2$

$2$

$\backslash$table$[[$Mark$,$Points,Letter Grade$],[95$ to $100,4\mathrm{.}00,A+$