December 15, 2022, Learn eTutorial

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This is a simple student level python program to determine the grade of a student based on the marks obtained in five subjects.

To understand this example, you should have knowledge of the following Python programming topics:

To find the grade of a student we need his marks obtained in each subject and the maximum mark of a subject to which exam conducted. We read these values from the user and calculate the percentage of marks he obtained. According to the percentage got displays the appropriate grade to the user.

It's a beginner-level program as we need to input the marks of each subject of the student and calculate the percentage with simple mathematical operations only. Adding the marks of subjects and dividing it with total subjects will give average marks by using python methods and basics. Now from the average of the marks, we calculate the percentage of marks by dividing it with total marks for the exam, followed by multiplication with 100. Thus calculate the grade using `if`

condition** **and the `elif`

** **in python and print grades depend on the percentage of marks.

For example, let us take a case of students who got marks as 8, 7, 9, 6, 8 out of 10. The average of the marks is 7.6, the percentage is 76 and then we calculate the grade. A or B or C or D or E depends on percentages 90, 80, 70, 60, and 50. So here, the grade is C.

Note: According to the grade bars, Grading can be done with the appropriate change in mark percentage given in the `if-elif `

conditions

**STEP 1:** Accept the maximum mark of a subject, marks of each subject separately from the user using the input method. Then convert that string to integer using `int()`

.

**STEP 2:** Calculate the **average** by dividing the sum of the marks by the total number of subjects, and **percentage** by dividing the **average** by the maximum mark of subjects, multiplying that with 100.

**STEP 3:** Use the `if`

condition to check the grade using the value from the **percentage**. If the **percentage** is above 90 then print **A**.

**STEP 4:** Use `elif`

statements to print the grades from** B, C, D**, depending on the **percentage** marks like 80, 70, 60.

**STEP 5:** Use the `else`

condition to print grade** E** if the **percentage** value is less than 60.

` ````
total=int(input("Enter the maximum mark of a subject: "))
sub1=int(input("Enter marks of the first subject: "))
sub2=int(input("Enter marks of the second subject: "))
sub3=int(input("Enter marks of the third subject: "))
sub4=int(input("Enter marks of the fourth subject: "))
sub5=int(input("Enter marks of the fifth subject: "))
average=(sub1+sub2+sub3+sub4+sub5)/5
print("Average is ",average)
percentage=(average/total)*100
print("According to the percentage, ")
if percentage >= 90:
print("Grade: A")
elif percentage >= 80 and percentage < 90:
print("Grade: B")
elif percentage >= 70 and percentage < 80:
print("Grade: C")
elif percentage >= 60 and percentage < 70:
print("Grade: D")
else:
print("Grade: E")
```

Enter the maximum mark of a subject: 10 Enter marks of the first subject: 8 Enter marks of the second subject: 7 Enter marks of the third subject: 9 Enter marks of the fourth subject: 6 Enter marks of the fifth subject: 8 Average is 7.6 According to the percentage, Grade: C