public Grade(string value)
{
switch (value[0])
{
case 'A':
Main = MainGrade.A;
break;
case 'B':
Main = MainGrade.B;
break;
case 'C':
Main = MainGrade.C;
break;
case 'D':
Main = MainGrade.D;
break;
case 'F':
Main = MainGrade.F;
break;
default:
Main = MainGrade.F;
break;
}
if (value.Length == 2)
{
if (value[1] == '+')
{
Sub = SubGrade.Plus;
}
else
{
Sub = SubGrade.Minus;
}
}
else
{
Sub = SubGrade.Zero;
}
}
public Grade(int value)
{
Main = (MainGrade)(value / 3);
Sub = (SubGrade)(value % 3);
}