1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<string.h>
 4 char or[19][20]={"dir","cd","md","rd","cls","date","time","ren","copy","javac","java","erase","chkntfs","assoc","at","attrib","call","help","quit"};
 5 char order[10];
 6 void cmd(int i);
 7 void main()
 8 {
 9     int i;
10     printf("Microsoft Windows [版本 6.1.7601]\n");
11     printf("版权所有 <c> 2009 Microsoft Corporation。版权所有权利。\n\n");
12     while(1)
13     {
14         printf("C:\\Users\\USER>");
15         gets(order);
16         if(strcmp(order,"\n")==1)
17         {
18             for(i=0;i<19;i++){
19                 if(stricmp(order,or[i])==0)
20                     break;
21             }
22             if(i==19)
23                 printf("\"%s\"不是内部或外部命令，也不是可运行的程序或批处理文件。\n\n",order);
24             else if(i==18)
25                 break;
26             else if(i==4)
27                 system("cls");
28             else{
29                 cmd(i);
30                 //system(order);
31                 printf("\n");
32             }
33         }
34     }
35 }
36
37
38 void cmd(int i){
39     FILE *fp;
40     int j;
41     int os[19][30];
42     fp=fopen("order.txt","r+");
43     for(j=0;j<19;j++)
44         fscanf(fp,"%s",os[j]);
45     fclose(fp);
46     if(i>=0&&i<=16)
47         printf("\"%s\"内部命令输入正确。\n",order);
48     else
49         printf("\"%s\"外部命令输入正确。\n",order);
50     if(i==17){
51         for(j=0;j<19;j++){
52             printf("%s\t",or[j]);
53             if(j>=0&&j<=16)
54                 printf("内部命令   ");
55             else
56                 printf("外部命令   ");
57             printf("%s\n",os[j]);
58         }
59
60     }
61     else if(i==4){
62         system(order);
63     }
64     else
65         printf("该命令的作用是：%s",os[i]);
66     printf("\n");
67 }