happy-number.py

# .................Happy number

# num=int(input("enter any number "))
# a=num
# while (a>4):
# 	sum=0
# 	while a!=0:
# 		rem=a%10
# 		sum=sum+rem*rem
# 		a=a/10
# 	a=sum
# if sum==1:
# 	print(num, "is a happy number")
# else:
# 	print(num,"is a unhappy number")

#----------------------------------------------------

# num=int(input("enter any number "))
# a=num
# while (a>4):
# 	sum=0
# 	while a!=0:
# 		rem=int(a%10)
# 		sum=sum+rem*rem
# 		a=a/10
# 	a=sum
# if sum==1:
# 	print(num, "is a happy number")
# else:
# 	print(num,"is a unhappy number")


n=int(input("Enter number :"))
for i in range(10000000000):
	a=n//10
	b=n%10
	n=(a*a)+(b*b)
	if n==1:
		print("happy number")
		break
	else:
		print("unhappy number")
		break