Natural number

Natural numbers are numbers that are common and clearly in nature. As such, it is a whole, nonnegative number.

Logic

To print the first N natural number we only have to run one single loop from 1 to N.

After taking input (num) from user start one loop from 1 to num, and then inside the loop simply print the current variable “i”.

See also: Calculate sum of first N natural numbers

Program

# Take number from user
num = int(input("Enter any number : "))

print("\nNatural numbers from 1 to", num)

for i in range(1, num + 1):
    print(i, end=" ")

Output

Enter any number : 10
Natural numbers from 1 to 10 1 2 3 4 5 6 7 8 9 10