Python code to print sum of first 100 Natural Numbers

Python code to print sum of first 100 Natural Numbers

Python code implementation without user-defined functions & classes

Code: 

sum = 0
for i in range(1, 101):
    sum = sum + i

print(sum)

Output: 

5050

Python code implementation using the function

In this code, we will print the sum of the first 100 Natural Numbers using the function.

Code: 

def sum_100_natural_numbers():
    sum = 0
    for i in range(1, 101):
        sum = sum + i
    return sum


print(sum_100_natural_numbers())

Output: 

5050

Python code implementation using Classes

In this code, we will implement a class that contains function print the sum of the first 100 Natural Numbers. We will create an object and will call the function using object.function(), that will print the desired result.

Code: 

class Natural_number_class(object):
    def sum_100_natural_numbers(self):
        sum = 0
        for i in range(1, 101):
            sum = sum + i
        return sum



#Create an Object
object_sum = Natural_number_class()
print(object_sum.sum_100_natural_numbers())

Output: 

5050

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