#include "iostream"
#include "conio.h"

class SomeFunc
{
public:
	static char* tostring(int num)
	{
		char *ch = new char[1024];
		sprintf(ch,"%d",num);
		return ch;
	}

	static char* DecToBin(double num)
	{
		if(num == 0) return "0";
		char *bt = new char[1024];
		bt[0] = '\0';
		while(1)
		{
			strcat(bt,tostring(int(num) % 2));
			if(((double)num / 2) == 0.5)
			{
				for(int i=0,j=strlen(bt)-1;i<floor(double(strlen(bt)/2));i++,j--)
				{
					char it = bt[i];
					bt[i] = bt[j];
					bt[j] = it;
				}
				return bt;
			}
			num = floor(double(num/2));
		}
	}
};

void main(int argc,char** argv)
{
	printf("%s = %s",SomeFunc::tostring(512),SomeFunc::DecToBin(512));
}