添加路径程序
大家经常发现某些软件安装时修改了ＡＵＴＯＥＸＥＣ．ＢＡＴ文件，使路径
ＰＡＴＨ指向自己的目录。本文提供一个小程序可完成此项功能。本程序可以直接
使用： ＡＤＰＡＴＨ 路径名，也可将函数ａｄｄｐａｔｈ（ ）用在自己的安
装程序中。
本程序在Ｔｕｒｂｏ Ｃ ２．０下编译通过，在Ｘ８６兼容机上使用正常。
附源程序 ＡＤＰＡＴＨ．Ｃ
1 #include
2 #include
3 #include
4 #define flag1 "set path="
5 #define flag2 "path="
6 #define endchar(s) (((char *)s))
7 main(int argc,char *argv)
8 { if(argc<2)
9 {printf("Usage: ADPATH newpath\n"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;exit(1);}
10 addpath(argv);}
11 addpath(char *newpath)
12 {FILE *aut,*tmp;
13 char buffer;
14 char tname;
15 tmpnam(tname);
16 if((aut=fopen("c:\\autoexec.bat", "r"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">)==NULL)
17 {printf("erro open autoexec.bat"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;exit(1);}
18 if((tmp=fopen(tname, "w"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">)==NULL)
19 {printf("error create tmpfile"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;exit(1);}
20 while (!feof(aut))
21 {strcpy(buffer,""<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;
22 fgets(buffer, 256, aut);
23 if((strnicmp(buffer, flag1, strlen(flag1))==0) ||(strnicmp(buffer, flag2, strlen(flag2)))==0)
24 {if(endchar(buffer)=='\n') endchar(buffer) ='\0';
25 strcat(buffer, (endchar(buffer)==';' ? "" : ";"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">);
26 strcat(strcat(buffer, newpath), "\n"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;
27 }fputs(buffer,tmp);
28 }fclose(aut);
29 fclose(tmp);
30 remove("c:\\autoexec.bat"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;
31 rename(tname,"autoexec.new"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;
32 system("copy autoexec.new c:\\autoexec.bat"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;
33 remove("autoexec.new"<img src="images/smilies/face-wink.png" align="absmiddle" border="0">;
34 }
□山东 许振华

不错。

这个程序还不如直接用批处理来得更自然啊：）