见zoj 1154

 还是需要将输入数据当作字符串来处理，不能直接使用整型。

 

/* zoj 1154 Niven numbers */#include <stdio.h>
#define MAX 100
int isNivenNum(int base, char str[]);int main(void)
{int totalBlocks;int base;int first = 1;char str[MAX];scanf("%d", &totalBlocks);while(totalBlocks-- > 0){if(first)first = 0;elseprintf("\n");while(scanf("%d", &base) == 1 && base != 0){scanf("%s", str);if(isNivenNum(base, str))printf("yes\n");elseprintf("no\n");}}return 0;
}
int isNivenNum(int base, char str[])
{int digitSum = 0, decNum = 0;int temp;int i;for(i = 0; str[i] != '\0'; i++){temp = str[i] - '0';digitSum += temp;decNum = base *decNum + temp;}if(decNum % digitSum == 0)return 1;elsereturn 0;
}