Python Programs Written and Practiced by : Jiya Kiyam

File Name : grade_calc.py

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"""
Program Name: Grade Calculator
Description: Calculate Grade through input mark
"""
valid = False

while valid == False :
	mark = input("Enter the mark you got : ")
	if not mark.isdigit() or int(mark) > 100 :
		print("Enter a valid mark")
	else :
		valid = True
		mark = int(mark)
if mark >= 90 :
	print("Grade A")
elif mark >= 80 :
	print("Grade B")
elif mark >= 70 :
	print("Grade C")
else :
	print("Fail")

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