Write a program to find the sum of N natural numbers using for loop and while loop, respectively

Sure, here's the solution in Python:

Using for loop:

# Taking input from user
n = int(input("Enter a positive integer: "))

# Initializing the sum variable
sum = 0

# Using for loop to calculate sum of first n natural numbers
for i in range(1, n+1):
    sum += i

# Displaying the sum
print("Sum of first", n, "natural numbers is:", sum)

Using while loop:

# Taking input from user
n = int(input("Enter a positive integer: "))

# Initializing the sum variable
sum = 0

# Using while loop to calculate sum of first n natural numbers
i = 1
while i <= n:
    sum += i
    i += 1

# Displaying the sum
print("Sum of first", n, "natural numbers is:", sum)

Both programs achieve the same result, i.e., finding the sum of first N natural numbers.