Assignments » Conditional Structures »  Set 1  »  Solution 8

The marks obtained by a student in 3 different subjects are input by the user. Your program should calculate the average of subjects and display the grade. The student gets a grade as per the following rules:

Average	Grade
90-100	A
80-89	B
70-79	C
60-69	D
0-59	F

Source Code

sub1 = int(input("Enter marks obtained in subject 1: "))
sub2 = int(input("Enter marks obtained in subject 2: "))
sub3 = int(input("Enter marks obtained in subject 3: "))
        
avg_marks = (sub1 + sub2 + sub3) / 3
print("Average marks:", format(avg_marks,'.2f'))
        
if avg_marks >= 90:
  print("Grade: A")
elif avg_marks >= 80:
  print("Grade: B")
elif avg_marks >= 70:
  print("Grade: C")
elif avg_marks >= 60:
  print("Grade: D")
else:
  print("Grade: F")

Output