#include <stdio.h>
#include <string.h>
char strInput[50];//应该用5000才对吧?
int main()
{
	int res,i,a,b,c,d,x;
	while (1)
	{
		res = 0;
		scanf("%s",strInput);
		if (strcmp(strInput,"0")==0) 
			return 0;
		x = strlen(strInput);
		for (i=0;i<x;i++)
			res +=strInput[i]-'0';
		while (res>=10) 
		{
			a = res/1000;
			b = (res-a*1000)/100;
			c = (res-a*1000-b*100)/10;
			d = res%10;
			res = a+b+c+d;
		}
		printf("%d\n",res);
	}
	return 0;
}

• 这种题就不用计较了吧…… (525) frkstyc 2005-11-02 23:29:28
• 昏厥～char strInput[1];都能AC。。。。 (38) raymond8023 2007-11-21 13:39:40
• Re:这也AC了? (34) D00095 2008-04-15 19:50:17
• Re:这也AC了? (525) sunnyw 2011-07-27 17:45:12