题解 | #配置文件恢复#

借鉴了这位老哥的思路：地址

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

#define MAX_CHAR 100

void out_tmp(int index);
char *cmd1[6] = {"reset", "reset", "board", "board", "reboot", "backplane"};
char *cmd2[6] = {"no use", "board", "add", "delete", "backplane", "abort"};

int main(int argc, char const *argv[])
{
    char in[MAX_CHAR] = {};

    // fgets(in, 100, stdin);
    while (gets(in))
    {
        int len = strlen(in);
        if (len == 0)
        {
            printf("\r\n");
            continue;
        }
        int flag = 1, pob = 0;//找到指向两个字空格的地方
        //考虑输入一个字还是两个字
        for (int i = 0; i < len; i++)
        {
            if (in[i] == ' ')
            {
                pob = i;
                flag = 0;
                break;
            }

        }
        if (flag)
        {
            if (strncmp(in, cmd1[0], len) == 0)
            {
                printf("reset what\n");
            }
            else
            {
                printf("unknown command\n");
            }

        }
        else
        {
            int count=0, ret_flag; //输入的匹配情况，只有唯一的情况下才输出对应命令
            for (int i = 1; i < 6; i++)
            {
                if (strncmp(in, cmd1[i], pob) == 0 &&
                    strncmp(in+pob+1, cmd2[i], len-pob-1) == 0)
                {
                    ret_flag = i;
                    count++;
                }
            }
            if (count == 1)
            {
                out_tmp(ret_flag);
            }
            else
            {
                printf("unknown command\n");
            }
        }
    }
    return 0;
}

void out_tmp(int index){
    switch (index)
    {
    case 0:
        printf("reset what\n");
        break;
    case 1:
        printf("board fault\n");
        break;
    case 2:
        printf("where to add\n");
        break;
    case 3:
        printf("no board at all\n");
        break;
    case 4:
        printf("impossible\n");
        break;
    case 5:
        printf("install first\n");
        break;

    default:
        break;
    }
}