#Function and loops, and returning several values

#write a program that reads number of students
#in the class, grade for each student, 
#and finds the number of students who passed
#and the average passing grade
#USE FUNCTIONS!
#we will write a function pass_grade
#that has one parameter - numbers of students in 
#the class
#function reads a grade for each student
#and returns: number of students who passed
#and average passing grade
#write a program that randomly generates
#the numbers of students in the class and test the 
#function. Randomly generate the grades
#Assume that range will be VALID
#number of students >0
#grade 0 to 100
#we will limit number of student to 10

import random
LOW_GRADE=0
UPPER_GRADE=100
LOW=5
UPPER=10
def pass_grade(num_stud):
	counter=1
	counterPass=0
	sumPass=0
	while(counter<=num_stud):
		grade=random.randint(LOW_GRADE,UPPER_GRADE)
		print(grade)
		if(grade>=60):
			counterPass=counterPass+1
			sumPass=sumPass+grade
		counter=counter+1
	if(counterPass>0):
		ave=sumPass/counterPass
	else:
		ave=0.0

	return counterPass, ave

def main():
	num_stud=random.randint(LOW, UPPER)
	print(num_stud)
	cPass, avePass= pass_grade(num_stud)
	if(cPass>0):
		print(cPass, "students passed the class")
		print("passing grade is", avePass)
	else:
		print("NOBODY PASSED")
main()