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Sum of first N natural numbers with alternate signs | Function to find the sum of first N natural numbers with alternate signs.
Stores sum of alternate sign of first N natural numbers.
If N is an even number.
Update alternateSum.
If N is an odd number.
Update alternateSum.
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to sum of first N natural numbers with alternate signs and the other steps required.
 def alternatingSumOfFirst_N ( N ) :
	alternateSum = 0 ;
	if ( N % 2 == 0 ) :
		alternateSum = ( - N ) // 2 ;
	else :
		alternateSum = ( N + 1 ) // 2 ;
	return alternateSum ;
if __name__ == ' _ _ main _ _ ' :
	N = 6 ;
	print ( alternatingSumOfFirst_N ( N ) ) ;