Summation Example

Description

This script shows how a mathematical operation, in this case a summation, can be applied in terms of code. In this instance we've got , where is the input parameter.

You can see the mathematics at WolframAlpha and the code at CodePad. Moreover, you can view the Python Version, the C# Version, or the very similar C Version of the script.

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Usage

Modify Line 7 changing n to any value you wish to test.

With the default parameter of int n = 5 we get the following output:

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Code

#include <iostream>

int squareToN( int n );

int main(){

	int n = 5;
	std::cout << "Summation of (i^2) from i = 0 to n = " << n << " is " << squareToN( n );
	
	return 0;
	
}

int squareToN( int n ){

	int x = 0;
	for( int i = 0; i <= n; i++ )
		x = x + ( i * i );
	
	return x;

}

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