17.Sample Programs using-loops and nested loops
Sum of the digits of a number sum=0 n=int(input("Enter a number..")) while n!=0: sum=sum+n%10; n=n//10 print("Sum of the digits=",sum) Output: Enter a number..123 Sum of the digits=6 Program to check whether the given number is prime or not n=int(input("Enter a number..")) i=2 prime=True while i<=n//2: if n%i==0: prime=False break i=i+1 if prime==True: print('Prime number') else: print('Not a prime number') Output: Enter a number..7 Prime number Enter a number..4 Not a Prime number Python program to find the sum of even numbers from N given numbers sum=0 N=int(input("enter the number of numbers (N)..")) print("Enter the ", N ," Numbers") for i in range(N): num=int(input()) if num%2==0: sum=sum+num print("Sum of even numbers..",sum) Output Enter the number of numbers (N)..5 Enter the 5 Numbers