#Write a function ave_3 that has 3 integer parameters. Function returns the 
#average of it's parameters. Write main to test your function. 

def ave_3(a, b, c): 
	#function definition, ave_3 is a function name, 
	#a, b and c are FORMAL parameters
	
	return (a+b+c)/3

	#or we can write 
	#ave=(a+b+c)/3
	#return ave

def main():
	num1=int(input("enter first int "))
	num2=int(input("enter second int "))
	num3=int(input("enter third int "))
	result=ave_3(num1, num2, num3) #function call
	#num1, num2, num3 are ACTUAL parameters
	#num1 will replace a, num2 will replace b, num3 will replace c
	#return value will be assigned to the variable result

	print(result)
main()