#Write a function ave_grade that has one parameter - number of courses student 
#takes per semester. Function reads the 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 calls function ave_grade and prints the average grade 

def ave_grade(num_courses):
	sum=0
	for i in range(num_courses):
		grade=int(input("enter grade "))
		sum=sum+grade
	ave=sum/num_courses
	return ave
def main():
	num_courses=int(input("enter number of courses "))
	print("average grade", ave_grade(num_courses))
main()