加密

1.字符串怎么判断结束

2.直接读取，省去中间步骤

3.memset

4.取余操作

#include <stdio.h>
#include <string.h>

void password(int sum[])
{
	int temp;
	int s;
	for(int i = 0;i < 6;i++)
	{
		temp = sum[i];
		while(temp > 10)
		{
			s = temp;
			temp = 0;
			while(s > 0)
			{
    			temp += s % 10;
				s = s / 10;
			}
		}
		sum[i] = temp;
	}
}


void main()
{
	int n;
	int sum[6];
	scanf("%d",&n);
	getchar();
	while(n--)
	{
		char c;
		int cnt = 0;
		memset(sum,0,sizeof(sum));
		while((c = getchar()) != EOF && c != '\n')
		{
			sum[cnt%6] += c;
			cnt++;
		}
		password(sum);
		for(int i = 0;i < 6;i++)
			printf("%d",sum[i]);
		printf("\n");
	}
}