1016七分表示

	#include <stdio.h>
	#define BSIZE 36


	void print_bin(int);

	int main()
	{
		char bin[BSIZE] = {0};
		char dexn[BSIZE] = {0};
		unsigned long long  dex;
		int i;
		int k;
		while(scanf("%s",bin) == 1)
		{
			dex = 0;
			k = 0;
			for(i=0; i < BSIZE; i++)
			{
				if(bin[i] == 0) break;
				dex = dex * 2 + (bin[i]-'0');
			}

			while(1)
			{
				if(dex < 10)
				{
					dexn[k++] = dex + '0';
					break;
				}
				i = dex % 10;
				dex = dex / 10;
				dexn[k++] = '0'+i;
			}

			for(i=k-1; i >= 0; i--)
			{
				print_bin(dexn[i] - '0');
			}

			printf("
");

		}
		return 0;
	}


	void print_bin(int digit)
	{
	   switch(digit)
	   {
	   case 0: printf("0000");break;
	   case 1: printf("0001");break;
	   case 2: printf("0010");break;
	   case 3: printf("0011");break;
	   case 4: printf("0100");break;
	   case 5: printf("0101");break;
	   case 6: printf("0110");break;
	   case 7: printf("0111");break;
	   case 8: printf("1000");break;
	   case 9: printf("1001");break;
	   default : break;
	   }
	}