#nested loop

#write a program that processing grades for several students
#program randomly generates the number of students in the department, 
#range 5 to 15, for each student program generates the number of courses each 
#student takes, range 2 - 4
#for each course program generates final grade, range  0 to 100

#the program finds the average grade per student over the courses each 
#student takes, and the average grade 
#for department 

#write everything in main
#discussion: inner loop - processing courses for ONE students
#outer loop - processing all students

import random
def main():
	num_students=random.randint(5,15)
	print("number of students", num_students)
	total_department=0
	counter_courses=0
	for i in range(num_students):
		print("processing student", i+1)
		num_courses=random.randint(2,4)
		counter_courses=counter_courses+num_courses
		print("number of courses for student", i+1,"is", num_courses)
		total_student=0	
		for j in range(num_courses):
			grade=random.randint(0,100)
			print("grades are", grade)
			total_student=total_student+grade
		
		print("average grade for student", i+1,"is", total_student/num_courses)
		
		total_department = total_department + total_student

	print("average for department is", total_department/counter_courses)

main()