#write a function ave_grade that has one parameter - number of courses
#student takes per semester
#function reads grade for each and returns the average grade per 
#semester

#write a program (main) to test your function: 
#program reads the number of courses student takes per semester
#call function ave_grade and prints the average grade


#challenge: write main that reads first number of students
#and then for each student number of courses and finds average grade for 
#each student
def ave_grade(num_courses):
	sum=0
	for i in range(num_courses):
		grade=int(input("enter grade "))
		sum=sum+grade
	#we will assume that num_courses >0
	#we will check it in the main before function call
	return (sum/num_courses)
def main():
	num_courses=int(input("how many courses you took "))
	if(num_courses>0):
		print("averagde grade", ave_grade(num_courses))
	else:
		print("didnt take any courses")
main()