Question: Write a function, int sumn(int n) that adds sum of natural numbers 1,2,3 ...... n and return the sum to a calling program. In main

Write a function, int sumn(int n) that adds sum of natural numbers 1,2,3 ...... n and return the sum to a calling program. In main function, prompt the user to enter a positive number and call sumn () output the result.

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