Don\'t know why I am getting an error. I have included pictures of what I have a

Question

Don't know why I am getting an error. I have included pictures of what I have already.
This is the question/problem:

Microsoft VB Grade Book. A teacher maintains a database containing two tables-student and grades. The students table has three fields: studentID, lastName, and firstName. The Grades table has four fields: studentID, firstExam, secondExam, and finalExam. At the beginning of the semester, the Students table is filled in completely with a record for each student in a class, and the Grades table has a record for each student that contains only the students ID number. (Note: The database is contained in the file Gradebook.accdb from the folder CH10 Databases.) Write a program that allows the instructor to record and process the grades for the semester. The program should do the following:

A) Use a navigation toolbar to fill the Grades table.

B) After all the grades have been entered, display a DataGridView control showing the name of each student and his or her semester average. The semester average should be calculated as (firstExam + secondExam + 2*finalExam) 4.

Explanation / Answer

#define true ((rand() % 2)? true: false) // Debug THAT!

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