Bucky, could you help me!!! I want to make a program that can help students to calculate GPA. Students just need to type in their grades(A,B,C,D,F) and computer will tell them A=4, B=3, etc. The problem is I don't want it to do that. I want it first changes A into 5 and plugs in my GPA equation. So do others. Then students do not have to enter numbers again.

I'm looking forward your advice!!!