#include <iostream.h>
#include <stdlib.h>
#include <windows.h>


void main(int argc, char *argv[])
{
	unsigned int  size, i;
	int   x=2, y=2;

	size = ((argc>1) && (size=atoi(argv[1]))) ? size : 0xFFFFFFFF;

	cout<<"Computing by multiplication "<<size<<" times\n";

	DWORD runtime = GetTickCount();
	for(i=0;i<size;i++){
		x *= y;
	}
	for(i=0;i<size;i++){
		x /= y;
	}
	runtime = GetTickCount() - runtime;
	cout<<"runtime is "<<runtime<<" msec\n";
	cout<<" x = "<<x<<endl;

	cout<<"Computing by shifting "<<size<<" times\n";
	runtime = GetTickCount();
	for(i=0;i<size;i++){
		x <<= 1;
	}
	for(i=0;i<size;i++){
		x >>= 1;
	}
	runtime = GetTickCount() - runtime;
	cout<<"runtime is "<<runtime<<" msec\n\n";
	cout<<" x = "<<x<<endl;
}