Question

c语言一段代码错误修改

# include <string.h>
# include <windows.h>
# include <stdio.h>
int main()
{

char regname[]="Software\\Microsoft\\Windows\\CurrentVersion\\Run"; /*开机启动路径*/
HKEY hkResult;
int ret=RegOpenKey(HKEY_LOCAL_MACHINE,regname,&hkResult);
ret=RegSetValueEx(hkResult,"jjj",0,REG_EXPAND_SZ,(unsigned char "c:\for.exe"/,25);
if(ret==0)
{
printf("success to write run key\n");
RegCloseKey(hkResult);
}
else
{
printf("failed to open regedit.%d\n",ret);
return 0;
}
}

这段代码是修改注册表的代码 里面的ret=RegSetValueEx(hkResult,"jjj",0,REG_EXPAND_SZ,(unsigned char "c:\for.exe"/,25);
这一句显示有错误 帮忙改一下，改成正确的

Answer 1

RegSetValueEx第5个参数定义错误，如下：可以正确编译通过。
# include <string.h>
# include <windows.h>
# include <stdio.h>
int main()
{

char regname[]="Software\\Microsoft\\Windows\\CurrentVersion\\Run"; /*开机启动路径*/
HKEY hkResult;
unsigned char p[]="c:\\for.exe";
unsigned char *q;
q=(unsigned char *)&p;//强制转换
int ret=RegOpenKey(HKEY_LOCAL_MACHINE,regname,&hkResult);
ret=RegSetValueEx(hkResult,"jjj",0,REG_EXPAND_SZ,q,25);
if(ret==0)
{
printf("success to write run key\n");
RegCloseKey(hkResult);
}
else
{
printf("failed to open regedit.%d\n",ret);
return 0;
}
}

忘采纳。。

Answer 2

把17和20行的后边改为 Sqlist[i].xuehao
请采纳答案，支持我一下。

Answer 3

你试一下把 c:\for.exe 改成 c:\\for.exe.