Miscellany

#include <stdio.h>
#include <cstdlib>
#include <math.h>

int main( )
{
	float mypi = 1;
	bool mode = false;

	printf( "|  WOOT! BRETTS PI CALULATOR!  |\n\n" );
	for ( unsigned i = 0; i < 100; i++ )
	{
		if( mode ) {
			mypi += ( 1.0 / ( ( 3 + ( 2 * i ) ) * ( pow( (double)3, (int)( i + 1 ) ) ) ) );
		}else{
			mypi -= ( 1.0 / ( ( 3 + ( 2 * i ) ) * ( pow( (double)3, (int)( i + 1 ) ) ) ) );
		}
		mode = !mode;
	}

	mypi = sqrt( (double)12 ) * mypi;

	printf( "PI: %f\n", mypi );
	system( "PAUSE" );
	return 1;
}