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python/_Basics/Python Program to Find the Sum of Natural Numbers.py

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+# Python program to find the sum of natural numbers up to n where n is provided by user
+
+# change this value for a different result
+num = 16
+
+# uncomment to take input from the user
+#num = int(input("Enter a number: "))
+
+if num < 0:
+   print("Enter a positive number")
+else:
+   sum = 0
+   # use while loop to iterate un till zero
+   while(num > 0):
+       sum += num
+       num -= 1
+   print("The sum is",sum)