7.5 Code Practice Instructions:
Use the function written in the last lesson to calculate a student’s GPA. Ask them how many classes they are taking, then ask them to enter the grades for each class and if it is weighted.

Your program should then output the averaged GPA including the decimal place.

Your main program must call the function.

SAMPLE RUN:
How many Classes are you taking? 7

Enter your Letter Grade: C
Is it weighted? (1 = yes) 1
Your GPA score is: 3

Enter your Letter Grade: D
Is it weighted? (1 = yes) 0
Your GPA score is: 1

Enter your Letter Grade: A
Is it weighted? (1 = yes) 1
Your GPA score is: 5

Enter your Letter Grade: B
Is it weighted? (1 = yes) 1
Your GPA score is: 4

Enter your Letter Grade: C
Is it weighted? (1 = yes) 0
Your GPA score is: 2

Enter your Letter Grade: A
Is it weighted? (1 = yes) 0
Your GPA score is: 4

Enter your Letter Grade: C
Is it weighted? (1 = yes) 0
Your GPA score is: 2

Your weighted GPA is a 3.0.